NEET 2026 Jun 21 Question Paper with Solutions

All 180 questions from the NEET 2026 (Jun 21) paper — Physics (45), Chemistry (45) and Biology (90) — each with the correct answer (answer key) and a step-by-step solution. Read it free online, or attempt the full paper as a timed mock test.Physics PYQs 2026 Chemistry PYQs 2026 Biology PYQs 2026

Questions: 180
Physics: 45
Chemistry: 45
Biology: 90

Physics45 questions

Q1Single correctLaws of Motion

A particle of mass M moves along a horizontal x axis from

x = 0

x = L

. The coefficient of kinetic friction varies as a function of x as

μ_{k} = μ_{0} - αx

, where

μ_{0}, α

are constants of appropriate dimensions, so that

μ_{k} (L) = 0

. The total work done by the frictional force during the motion is

n μ_{0} MgL

, where g is the acceleration due to gravity. The value of n is:

(1)

3

(2)

1

(3)

\frac{1}{3}

(4)

\frac{1}{2}

Q2Single correctKinetic Theory of Gases

The mean free path of molecules in an ideal gas A is half that of another ideal gas B. The diameter of the spherical molecules of gas A is twice the diameter of the molecules of B. If number densities of the gases A and B are

n_{A}

and

n_{B}

, respectively, the correct option is:

(1)

n_{A} = n_{B}

(2)

n_{A} = 2 n_{B}

(3)

n_{A} = \frac{1}{4} n_{B}

(4)

n_{A} = \frac{1}{2} n_{B}

Q3Single correctElectromagnetic Induction

Two identical inductors are connected in two different configurations P and Q, where a time varying current I(t) is flowing, as shown in the figure. The induced emf between points a and b for configuration P is

E_{P}

and that for configuration Q is

E_{Q}

. The ratio

E_{P} / E_{Q}

is:

Two configurations: P shows two identical inductor coils in series; Q shows them in parallel, both between terminals a and b with current I(t).

(1)

\frac{1}{4}

(2)

\frac{1}{2}

(3)

1

(4)

2

Q4Single correctWaves

For sound waves, if the number of nodes for the

5^{t h}

harmonic of an open-ended pipe is n and that for the

9^{t h}

harmonic of the same pipe with one of its ends closed is m, the ratio

\frac{n}{m}

is:

(1)

\frac{5}{9}

(2)

\frac{9}{5}

(3)

1

(4)

\frac{3}{5}

Q5Single correctElectromagnetic Induction

Consider a long solenoid of length l and radius r. If n is the number of turns per unit length and

μ_{0}

is the permeability of free space, the inductance of the solenoid is:

(1)

μ_{0} π n^{2} r^{2} l

(2)

μ_{0} n^{2} r^{2} l

(3)

(μ_{0} /2) π n^{2} r^{2} l

(4)

2 μ_{0} π n^{2} r^{2} l

Q6Single correctMotion in a Straight Line

Consider a particle moving along a straight line, whose position as a function of time is given by

s (t) = α t^{2} - βt + γ

, where

α = 1 ms^{- 2}

β = 6 ms^{- 1}

and

γ = 5 m

. The average speed of the particle, in

ms^{- 1}

from

t = 0

t = 6

s is:

(1)

12

(2)

6

(3)

3

(4)

0

Q7Single correctNuclei

Consider the following nuclear reaction:

^{238} U ⟶^{234} Th +^{4} He

Take masses of

^{238} U

^{234} Th

and

^{4} He

as 238.050 u, 234.043 u and 4.003 u, respectively. The Q value for the reaction, in keV, is: [Given: 1 u = 931.5 MeV

c^{- 2}

]

(1)

3726

(2)

3730

(3)

3736

(4)

3740

Q8Single correctDual Nature of Radiation and Matter

A beam of light falls on a metal surface such that photo-electrons are generated. If power of the light source starts to decrease linearly with time t, then variation of the photocurrent I and magnitude of the stopping potential

∣ V ∣

with time can be best represented by:

(1)

I-t: current decreasing linearly to zero; |V|-t: stopping potential constant.

(2)

I-t decreasing to zero; |V|-t decreasing linearly to zero.

(3)

(4)

Q9Single correctElectrostatic Potential and Capacitance

Three identical capacitors, P, Q and S, each of the capacitance C, are connected to a battery of voltage V, as shown in the figure. If the energy stored in the capacitor P and total energy stored in the system are

U_{P}

and

U_{T}

, respectively, then the ratio

\frac{U _{P}}{U _{T}}

is:

Circuit with capacitors P and Q in series on the top branch, in parallel with capacitor S, connected across battery V.

(1)

2/3

(2)

1/3

(3)

1/2

(4)

1/6

Q10Single correctMechanical Properties of Fluids

Water flows in a streamline motion through a horizontal pipe of circular cross-section as shown in the figure. The pressure difference of water between P and Q is

15 Nm^{- 2}

. The area of cross-section at P and Q are

40 cm^{2}

and

20 cm^{2}

, respectively. The rate of flow of water through the pipe, in

cm^{3} s^{- 1}

, is: [Take density of water =

1000 kg m^{- 3}

]

Horizontal pipe wide at section P on the left, narrowing to a throat at section Q, then widening again.

(1)

100

(2)

200

(3)

300

(4)

400

Q11Single correctMoving Charges and Magnetism

A current

I_{0}

flows through a metallic circular loop of radius r as shown in the figure. Resistance of the segment ABC is half that of ADC. Magnitude of magnetic field at the centre O of the loop is:

Circular metallic loop with centre O; points A (top), B (left), C (bottom), D (right); current I0 enters at A and exits at C; dashed radius r to the lower-right arc.

(1)

\frac{μ _{0} I _{0}}{12 r}

(2)

\frac{μ _{0} I _{0}}{4 r}

(3)

\frac{μ _{0} I _{0}}{2 r}

(4)

\frac{μ _{0} I _{0}}{2 π r}

Q12Single correctMechanical Properties of Fluids

In the measurement of viscosity of liquids using terminal velocity experiment, spherical balls of same radius but having different densities are used. The variation of the terminal velocity (v) with the ratio of density of spherical ball (

σ

) to density of the liquid (

ρ

), is best represented by:

(1)

v vs sigma/rho: line of positive slope starting at sigma/rho=1, rising right.

(2)

Line through origin, dashed for 0<sigma/rho<1, solid beyond.

(3)

Line with positive x-intercept between 0 and 1, dashed to sigma/rho=1 then solid.

(4)

Horizontal constant v beginning at sigma/rho=1.

Q13Single correctGravitation

Two planets

P_{1}

and

P_{2}

with equal mass have radii

R_{1}

and

R_{2}

, respectively, where

R_{2} = \frac{R _{1}}{2}

. The escape speeds of

P_{1}

and

P_{2}

are

v_{1}

and

v_{2}

, respectively. Then

\frac{v _{2}}{v _{1}}

is:

(1)

\frac{1}{2}

(2)

1

(3)

2

(4)

2

Q14Single correctGravitation

In a solar system, the time-period of revolution of a planet tracing a circular orbit of radius

R

is proportional to:

(1)

R^{1/2}

(2)

R^{3/2}

(3)

R^{2}

(4)

R^{3}

Q15Single correctMoving Charges and Magnetism

Two infinitely long parallel conducting wires A and B carry currents I and

2 I

, respectively, in the same direction. The wire A has uniform mass per unit length

λ

and lies on an insulated floor. The wire B is kept fixed at a height h above the floor. The minimum magnitude of h so that the wire A does not rise from the floor is: [g is the acceleration due to gravity and

μ_{0}

is the permeability of free space.]

(1)

\frac{μ _{0} I ^{2}}{2 πλ g}

(2)

\frac{μ _{0} I ^{2}}{πλ g}

(3)

\frac{2 μ _{0} I ^{2}}{πλ g}

(4)

\frac{4 μ _{0} I ^{2}}{πλ g}

Q16Single correctSemiconductor Electronics

An ideal Zener diode with breakdown voltage of

- 3

V is reverse biased with a negative input voltage

V_{i} = - 5

V. The magnitude of voltage difference between point B and A is:

Series loop: from node C a Zener diode (cathode bar facing C, anode triangle facing B) leads to node B, then resistor R to node A; a cell with its long plate on the left sits in the bottom wire.

(1)

3

(2)

2

(3)

1

(4)

0

Q17Single correctThermodynamics

In an adiabatic expansion, the temperature of one mole of an ideal monatomic gas (

γ = 5/3

) decreases from 60 K to 50 K. The work done by the gas in the process is: [Take the universal gas constant as

R = 8.3 J mol^{- 1} K^{- 1}

]

(1)

41.5

(2)

83

(3)

124.5

(4)

166

Q18Single correctDual Nature of Radiation and Matter

A ray of light with wavelength

λ

is incident on three different photoelectric cells namely 1, 2 and 3. The threshold wavelength of these photoelectric cells are

λ_{1}

λ_{2}

and

λ_{3}

, respectively and the magnitude of stopping potentials of these cells are

V_{1}

V_{2}

and

V_{3}

, respectively. The relation between

λ

and threshold wavelengths are

λ_{1} < λ

λ_{2} > λ

and

λ_{3} >> λ

. The correct option is:

(1)

V_{1} = 0, V_{2} < V_{3}

(2)

V_{1} = 0, V_{2} > V_{3}

(3)

V_{1} > V_{2}, V_{3} = 0

(4)

V_{1} < V_{2}, V_{3} = 0

Q19Single correctDual Nature of Radiation and Matter

A photon and an electron, each of 20 eV energy, move in free space. The ratio of linear momentum of electron

p_{e}

to that of photon

p_{p h}

\frac{p _{e}}{p _{p h}}

is: [Take speed of light =

3 \times 1 0^{8} ms^{- 1}

, charge of electron =

- 1.6 \times 1 0^{- 19}

C and mass of electron =

9 \times 1 0^{- 31}

kg]

(1)

\frac{2}{450}

(2)

\frac{1}{250}

(3)

225

(4)

275

Q20Single correctExperimental Physics

Which of the following measurements require 'index correction'?

(1)

Measurement of resistance of a wire using meter bridge

(2)

Measurement of gravitational acceleration using simple pendulum

(3)

Measurement of focal length of lenses using optical bench

(4)

Measurement of speed of sound using resonance tube

Q21Single correctElectrostatic Potential and Capacitance

A unit positive point charge is taken slowly through an infinitesimally thin tube that is inside a charged dielectric sphere of radius R, having uniform positive charge density

ρ

, as shown in the figure. The initial and final positions of the charge are marked by A and B at distance

2 R

and

3 R

respectively, from the centre of the sphere. In this process, the magnitude of the total work done on the point charge is

\frac{ρ R ^{2}}{n ε _{0}}

. The value of n is: [

ε_{0}

is the permittivity of vacuum]

Uniformly charged dielectric sphere of radius R, charge density rho, centre O, with a thin radial channel; point B at distance 3R and A at distance 2R from the centre.

(1)

2

(2)

6

(3)

9

(4)

18

Q22Single correctRay Optics and Optical Instruments

Consider three media P, Q and R with refractive indices 1, 1.25, and 1.5 respectively. The medium Q having a thickness of 5 cm is placed between extended media P and R as shown in the figure. An object O is placed at the centre of medium Q. If viewed from medium P near the normal direction, the apparent depth of O is

h_{1}

. For similar observation from medium R, the apparent depth is

h_{2}

. The value of

∣ h_{1} - h_{2} ∣

, in cm, is:

Three stacked media: top region n_P=1, middle layer Q (n_Q=1.25) containing object O and a vertical 5 cm thickness arrow, bottom layer R (n_R=1.5).

(1)

0

(2)

1

(3)

2

(4)

3

Q23Single correctSystems of Particles and Rotational Motion

A frictionless circular wire of unit radius is fixed on the horizontal plane. Two-point particles of unit mass start moving simultaneously from point

A (θ = \frac{π}{2})

with identical uniform angular speeds in opposite directions, and meet again at point

B (θ = - \frac{π}{2})

. During this time, which of the following figures schematically represent the magnitude of the total linear momentum P of the system, as a function of

θ

Circular wire with centre O; A at the top and B at the bottom of a dashed vertical diameter, a dashed horizontal diameter, and two dashed radii at ±45° from the vertical. θ is marked at the centre from the horizontal to the upper-right radius. Two curved arrows just outside the circle show the two particles leaving A in opposite senses.

(1)

P constant and non-zero for all θ from π/2 to −π/2.

(2)

P falls along a concave curve to zero midway between π/2 and −π/2, then rises again.

(3)

P rises from zero at π/2 as a semicircular arch and returns to zero before −π/2.

(4)

P falls linearly from its value at π/2 to zero near −π/2.

Q24Single correctThermal Properties of Matter

The temperature of a metallic sphere of radius R is increased by a small amount

Δ T

. If the linear coefficient of thermal expansion of the metal is

α

, the approximate increase in the volume of the sphere is:

(1)

2 π R^{3} α Δ T

(2)

3 π R^{3} α Δ T

(3)

4 π R^{3} α Δ T

(4)

6 π R^{3} α Δ T

Q25Single correctOscillations

A cylindrical cork of uniform density floats in a liquid of density

ρ_{1}

. If the cork is depressed slightly and released, it oscillates harmonically with time period T. If the same cork floats in another liquid of density

ρ_{2}

, then the similar oscillation has time period 2T. The value of

ρ_{2} / ρ_{1}

is:

(1)

4

(2)

2

(3)

1/2

(4)

1/4

Q26Single correctUnits and Measurements

One main scale division of a Vernier calliper is equal to 1 mm and the number of divisions on the Vernier scale is 10. When both the jaws touch each other, the Vernier scale shifts to the left of zero of the main scale in such a way that 4

^{th}

Vernier division coincides with a division of the main scale. If this Vernier calliper measures the length of the wire to be 1 cm, the actual length of the wire is:

(1)

0.60

(2)

0.96

(3)

1.00

(4)

1.04

Q27Single correctSystem of Particles and Rotational Motion

A solid sphere A of radius R and mass M is attached at a point to a smaller solid sphere B of radius

r < R

and mass

m < M

. Assume that the line joining their centres lies along the horizontal. The moment of inertia of the system calculated about a vertical axis passing through the centre of A is

I_{A}

and that calculated about a vertical axis passing through the centre of B is

I_{B}

. The difference

I_{A} - I_{B}

is:

Two configurations of a large sphere A (radius R) with a smaller sphere B (radius r) touching it; case 1 axis I_A through A's centre, case 2 axis I_B through B's centre.

(1)

(M - m) (R + r)^{2}

(2)

(m - M) (R + r)^{2}

(3)

(m - M) (R - r)^{2}

(4)

0

Q28Single correctOscillations

Consider a spring-mass simple harmonic oscillator in one dimension. The mass of the particle is m kg and the spring constant is k N

m^{- 1}

. At a given instant, the extension of the spring is x-meter and the speed of the particle is v m

s^{- 1}

. On the

x - v

plane, if the graph of v as a function of x is a circle, then the correct option is:

(1)

k = \frac{1}{m}

(2)

k = m

(3)

k = m^{2}

(4)

k = m

Q29Single correctRay Optics and Optical Instruments

The lens combination as shown in the figure, consists of two lenses,

L_{1}

and

L_{2}

, of the focal lengths +10 cm and

- 10

cm, respectively. The position of the image formed is:

Optical axis with object O (upward arrow) at left, biconvex lens L1 30 cm to its right, and biconcave lens L2 a further 3 cm to the right.

(1)

20 cm to the left of the concave lens

(2)

60 cm to the left of the concave lens

(3)

30 cm to the right of the concave lens

(4)

60 cm to the right of the concave lens

Q30Single correctAlternating Current

An ac voltage

V = 220 sin (2 \times 1 0^{3} t)

Volt is applied to a series LCR circuit. Then the current amplitude in this circuit is: (Given :

L = 10

mH,

C = 25 μ

R = 100 Ω

)

(1)

2.2 A

(2)

5.5 A

(3)

11.0 A

(4)

22.0 A

Q31Single correctSystem of Particles and Rotational Motion

A thin horizontal disc is rotating about a vertical axis passing through its fixed centre O. Its angular momentum is

L_{A}

and

L_{B}

computed about points A and B, respectively, with

OB = 2 \times O A

. The value of

\frac{L _{A}}{L _{B}}

is:

A thin disc with centre O and a counterclockwise rotation arrow; a dashed horizontal line through O passes point A on the disc edge and continues to point B, with OB equal to twice OA.

(1)

\frac{1}{4}

(2)

\frac{1}{2}

(3)

1

(4)

2

Q32Single correctElectromagnetic Induction

A conducting loop of finite resistance lies on the

x - y

plane. There is a constant magnetic field in the z direction. The area of the loop varies with time t, as

A = A_{0} (1 + sin t)

in appropriate units. The figure that correctly indicates the qualitative behaviour of the power P dissipated in the loop as a function of time is:

(1)

P vs t: two positive rectified-sine lobes.

(2)

P vs t: starts high, dips to a cusp at zero at the midpoint, rises back.

(3)

(4)

P vs t: from origin increasing with convex curvature.

Q33Single correctElectrostatic Potential and Capacitance

A point charge Q is placed inside a cavity within a solid isolated conducting sphere. Consider points A, B and C as shown in the figure, where the magnitudes of the electric fields are

E_{A}

E_{B}

E_{C}

, respectively. The points B and C are at the same distance from the center of the solid sphere. The correct option is :

A conducting sphere with a smaller off-centre spherical cavity holding point charge Q and point A; a horizontal dotted line through the cavity passes point C (left) and B (right) outside.

(1)

E_{A} = 0, E_{B} = E_{C}

(2)

E_{A} \neq = 0, E_{B} = E_{C}

(3)

E_{A} = 0, E_{B} > E_{C}

(4)

E_{A} \neq = 0, E_{B} < E_{C}

Q34Single correctElectrostatic Potential and Capacitance

Consider a fixed uniformly charged insulating sphere with radius R and total charge

+ Q

. A point charge

- q

(q << Q)

with mass m is released from rest at a distance of

3 R

from the centre of the charged sphere. When the point charge reaches the surface of the sphere, its speed is: (

ε_{0}

is the permittivity of vacuum, neglect gravitational forces)

(1)

\frac{3 Qq}{4 π ε _{0} m R}

(2)

\frac{2 Qq}{3 π ε _{0} m R}

(3)

\frac{Qq}{3 π ε _{0} m R}

(4)

\frac{Qq}{4 π ε _{0} m R}

Q35Single correctAtoms

In Geiger-Marsden experiment, the number of scattered

α

-particles

N (θ)

is plotted as a function of scattering angle

θ

. Which of the following options represents the correct plot?

(1)

N(θ) starts near 10^6, rises slightly to a maximum around 35° and then falls to about 10^2 by 170°.

(2)

N(θ) rises steadily on the log axis from about 30 at 10° to 10^7 near 160°.

(3)

N(θ) stays near 10 until about 30°, rises steeply to a 10^7 plateau between 75° and 110°, then falls back to 10 by 150°.

(4)

N(θ) starts at 10^7 near 5° and falls steeply, flattening towards 10 by 180°.

Q36Single correctCurrent Electricity

Consider two circuits, (A) and (B), each having two resistors. One of them has a positive temperature coefficient of resistance,

+ α

, while the other one has a negative temperature coefficient of resistance,

- α

, as shown in the figure. The current through these circuits are denoted by

I_{A}

and

I_{B}

. At initial temperature, the resistance of the two resistors is

R_{0}

. As the temperature is increased, the correct option that describes the variation of current in these circuits is:

Two circuits: (A) cell V driving R0(1-a*dT) and R0(1+a*dT) in series with current I_A; (B) cell V driving the same two resistors in parallel with current I_B.

(1)

I_{A}

remains constant while

I_{B}

increases

(2)

I_{A}

decreases while

I_{B}

increases

(3)

I_{A}

increases while

I_{B}

decreases

(4)

Both

I_{A}

and

I_{B}

remain constant

Q37Single correctUnits and Measurements

Consider that

σ_{s}

k_{B}

, b represents Stefan-Boltzmann constant, Boltzmann constant and Wien's displacement law constant, respectively. The dimension of

σ_{s} k_{B}^{- 1} b

is:

(1)

[L^{- 1} T^{- 1} K^{- 2}]

(2)

[L^{- 1} K^{- 2}]

(3)

[L^{- 1} T^{- 1} K^{- 3}]

(4)

[L^{- 1} T^{- 1} K^{- 4}]

Q38Single correctElectromagnetic Waves

An electromagnetic wave travelling in a lossless dielectric medium having a dielectric constant,

ε_{r} = 9

, has the electric field,

E_{x} = E_{0} sin (k z - 2 π \times 1 0^{6} t)

m^{- 1}

where

E_{0}

is the amplitude and k is the wave vector. Among the following options, the incorrect choice is

(1)

The speed of the electromagnetic wave inside the medium is

1 0^{8}

s^{- 1}

(2)

The wavelength of the electromagnetic wave inside the medium is 300 m

(3)

The magnetic field is given by the relation

B_{y} = \frac{B _{0}}{v} sin (k z - 2 π \times 1 0^{6} t)

where v is the speed of the electromagnetic wave inside the medium

(4)

The direction of propagation of the electromagnetic wave is along

+ z

Q39Single correctThermodynamics

One mole of an ideal monatomic gas undergoes a cyclic process as shown in the figure. The total heat supplied to the gas is:

P-V diagram, P (N/m^2) marked 100 and 300, V (m^3) marked 2 and 5; a closed rectangular cycle traversed clockwise.

(1)

400 J

(2)

500 J

(3)

600 J

(4)

800 J

Q40Single correctAtoms

Consider that an electron is revolving in an excited state of Hydrogen atom with velocity

25.6 \times 1 0^{5}

s^{- 1}

. The radius of the orbit is

x \times 1 0^{- 9}

m. The value of x is: [Take the mass of electron to be

9 \times 1 0^{- 31}

kg, charge of electron

= - 1.6 \times 1 0^{- 19}

C and

\frac{1}{4 π ε _{0}} = 9 \times 1 0^{9}

m^{2} C^{- 2}

]

(1)

4

(2)

3

(3)

2

(4)

1

Q41Single correctLaws of Motion

A car travels on a circular racetrack of radius 50 m, which is banked at angle

θ

. If the car travels at a speed 10 m

s^{- 1}

, then the wear and tear on its tyres is minimum. Taking the acceleration due to gravity to be 10 m

s^{- 2}

, the value of

θ

is:

(1)

tan^{- 1} (\frac{1}{5})

(2)

tan^{- 1} (\frac{2}{5})

(3)

tan^{- 1} (3 /2)

(4)

tan^{- 1} (23)

Q42Single correctSemiconductor Electronics

Three identical p-n junction diodes

D_{1}

D_{2}

, and

D_{3}

are connected across a battery as shown in the figure. If the width of the depletion regions of

D_{1}

D_{2}

and

D_{3}

are

W_{1}

W_{2}

and

W_{3}

, respectively, then the correct option is:

Three parallel branches across a 5 V battery: top 1 kOhm + diode D1, middle 1 kOhm + diode D2 (both forward), bottom diode D3 (reversed) + 1 kOhm.

(1)

W_{1} > W_{2} > W_{3}

(2)

W_{3} = W_{1} > W_{2}

(3)

W_{3} > W_{2} > W_{1}

(4)

W_{2} > W_{1} = W_{3}

Q43Single correctElectromagnetic Waves

The correct option is:

Part of the electromagnetic spectrum	Applications
P.. Microwave	I.. For purifying the water
Q.. UV rays	II.. For warming the food
R.. Gamma rays	III.. For AM and FM communication systems
S.. Radio wave	IV.. For treating the Cancer cells

(1)

P-I, Q-II, R-III, S-IV

(2)

P-I, Q-IV, R-II, S-III

(3)

P-II, Q-I, R-IV, S-III

(4)

P-II, Q-IV, R-III, S-I

Q44Single correctWork, Energy and Power

Bob B of mass m at rest is hanging vertically from the ceiling via a massless string of length 10 m, as shown in the figure. Point mass A of mass m travelling horizontally with speed 10 m

s^{- 1}

hits bob B elastically. The bob B rises h meter after the collision. Taking the acceleration due to gravity

g = 10

s^{- 2}

and neglecting the size of the bob, the value of h is:

A ball A on the left moves right at 10 m/s toward B, a bob hanging on a vertical string from a plain horizontal ceiling; both A and B are filled dots.

(1)

8

(2)

7

(3)

5

(4)

2.5

Q45Single correctKinetic Theory of Gases

An ideal gas is made of polyatomic molecules. Each of the molecules has three translational, three rotational and f number of vibrational modes. If the ratio of heat capacities

C_{P} / C_{V}

of the gas is 8/7, then the value of f is:

(1)

4

(2)

3

(3)

2

(4)

1

Chemistry45 questions

Q46Single correctAldehydes, Ketones and Carboxylic Acids

For the following reaction sequence, choose the correct option.

Benzene reacting under (i) CH3COCl with AlCl3 and then (ii) NaOCl, giving products P and Q.

(1)

P

is the sodium salt of a carboxylic acid,

Q

is a primary alcohol

(2)

P

and

Q

are aromatic compounds

(3)

P

gives a carboxylic acid on acidification,

Q

gives a poisonous gas on exposure to air and light

(4)

Both

P

and

Q

are carbonyl compounds

Q47Single correctCoordination Compounds

Given below are two statements: Statement-I :

[Fe(ox)_{3}]^{3 -}

is chiral. Statement-II :

t r an s - [Cr (H_{2} O)_{2} (ox)_{2}]^{-}

is chiral. (Given : ox

H_{2}

= HOOC – COOH) In light of the above statements, choose the most appropriate answer from the options given below:

(1)

Both

St a t e m e n t - I

and

St a t e m e n t - II

are correct

(2)

Both

St a t e m e n t - I

and

St a t e m e n t - II

are incorrect

(3)

St a t e m e n t - I

is correct but

St a t e m e n t - II

is incorrect

(4)

St a t e m e n t - I

is incorrect but

St a t e m e n t - II

is correct

Q48Single correctSome Basic Principles of Organic Chemistry

The following carbocation is stabilized by the interaction of the empty

p

orbital with

A benzene ring joined to a carbon bearing a positive charge (circled plus) and a CH3 group — the 1-phenylethyl cation.

(1)

filled

σ

and filled

π

orbitals

(2)

empty

σ

and empty

π^{*}

orbitals

(3)

empty

σ^{*}

and filled

π

orbitals

(4)

empty

σ^{*}

and empty

π^{*}

orbitals

Q49Single correctThe p-Block Elements and s-Block (Double salts)

In potash alum, the ratio of

K^{+}

and

SO_{4}^{2 -}

ions is

(1)

1 : 2

(2)

2 : 1

(3)

2 : 3

(4)

3 : 2

Q50Single correctBiomolecules

The correct statement about peptides and proteins is

(1)

Tertiary structure of proteins has two or more polypeptide subunits

(2)

Only the proteins having a quaternary structure are biologically active

(3)

β

-pleated sheet structures, peptide chains are held together by intermolecular hydrogen bonds

(4)

α

-helices, the polypeptide chain is twisted into a left-handed screw (helix) through intramolecular hydrogen bonds

Q51Single correctSome Basic Concepts of Chemistry

The numbers 17.0145 and 21.0235 were rounded to three figures after the decimal point. The resulting numbers, respectively, are

(1)

17.014

and

21.023

(2)

17.015

and

21.023

(3)

17.014

and

21.024

(4)

17.015

and

21.024

Q52Single correctEquilibrium

The correct order of solubility of the given salts in water at 298 K is (Given solubility products at 298 K: AgBr

K_{s p} = 5.0 \times 1 0^{- 13}

;

Zn(OH)_{2}

K_{s p} = 1.0 \times 1 0^{- 15}

;

Hg_{2} Cl_{2}

K_{s p} = 1.3 \times 1 0^{- 18}

)

(1)

Hg_{2} Cl_{2} > Zn(OH)_{2} > AgBr

(2)

AgBr > Zn(OH)_{2} > Hg_{2} Cl_{2}

(3)

Hg_{2} Cl_{2} > AgBr > Zn(OH)_{2}

(4)

Zn(OH)_{2} > AgBr > Hg_{2} Cl_{2}

Q53Single correctClassification of Elements and Periodicity

Among the following options, the correct trend in the electron gain enthalpy is

(1)

F > Cl > Br > I

(2)

Br > Cl > F > I

(3)

Cl > F > Br > I

(4)

I > Br > Cl > F

Q54Single correctSolutions

Assertion A: For an ideal solution formed by mixing liquids P and Q,

Δ_{mi x} H = 0

and

Δ_{mi x} V = 0

Reason R: No interactions occur between P and Q In the light of the above statements, choose the most appropriate answer from the options given below.

(1)

Both

A

and

R

are correct and

R

is the correct explanation of

A

(2)

Both

A

and

R

are correct but

R

NOT

the correct explanation of

A

(3)

A

is correct but

R

is not correct

(4)

A

is not correct but

R

is correct

Q55Single correctOrganic Chemistry - Purification and Characterisation

The amino acid that gives a red-blood colour on treating its sodium fusion extract with sodium nitroprusside is

(1)

leucine

(2)

threonine

(3)

methionine

(4)

serine

Q56Single correctElectrochemistry

The standard electrode potential (

E^{\circ}

) for the half-cell reaction

Fe^{3 +} + e^{-} \to Fe^{2 +}

at 298 K is (Given :

E^{\circ} (Fe^{3 +} / Fe) = - 0.04

V and

E^{\circ} (Fe^{2 +} / Fe) = - 0.44

V at 298 K)

(1)

+ 0.40

(2)

+ 0.76

(3)

- 0.48

(4)

+ 0.92

Q57Single correctRedox Reactions / Some Basic Concepts (Titration)

In an acidic medium, 10 mL of 0.25 M oxalic acid is titrated with

KMnO_{4}

solution. If the volume of

KMnO_{4}

solution required to reach end point is 10 mL, the strength of the

KMnO_{4}

solution is

(1)

0.10

(2)

0.20

(3)

0.25

(4)

0.15

Q58Single correctCoordination Compounds

According to crystal field theory, the correct order of ligands with respect to their decreasing order of field strength is

(1)

CO > NH_{3} > H_{2} O > Cl^{-}

(2)

CO > H_{2} O > NH_{3} > Cl^{-}

(3)

Cl^{-} > H_{2} O > NH_{3} > CO

(4)

Cl^{-} > NH_{3} > H_{2} O > CO

Q59Single correctThermodynamics

Two moles of an ideal gas undergo free expansion from 10 L to 100 L at 300 K. The values of

Δ S_{system}

and

Δ S_{surroundings}

are (R is universal gas constant)

(1)

Δ S_{system} = 0

;

Δ S_{surroundings} = 0

(2)

Δ S_{system} = 4.606

Δ S_{surroundings} = - 4.606

(3)

Δ S_{system} = 0

;

Δ S_{surroundings} = 4.606

(4)

Δ S_{system} = 4.606

Δ S_{surroundings} = 0

Q60Single correctChemical Kinetics

2 A k B

is a zero-order reaction, where

k = 1.0 mol L^{- 1} min^{- 1}

. If the initial concentration of A is 2 M, then the time taken to complete 75% of the reaction will be

(1)

1.5

min

(2)

0.75

min

(3)

1.0

min

(4)

2.0

min

Q61Single correctThe d- and f-Block Elements

Given below are two statements: One is labelled as

A sser t i o n A

and the other is labelled as

R e a so n R

A sser t i o n A :

Generally, 3d transition metals have high melting points.

R e a so n R :

Involvement of 3d-electrons in addition to 4s-electrons in the interatomic metallic bonding. In light of the above statements, choose the

m os t a pp ro p r ia t e

answer from the options given below:

(1)

Both

A

and

R

are correct and

R

is the correct explanation of

A

(2)

Both

A

and

R

are correct and

R

NOT

the correct explanation of

A

(3)

A

is correct but

R

is not correct.

(4)

A

is not correct but

R

is correct

Q62Single correctElectrochemistry

For a salt XY, which is a strong electrolyte, the plot of

Λ_{m}

versus

c

has a slope of

- 90.0

S c

m^{2}

l^{- 3/2}

L^{1/2}

at 298 K. At 0.01 M concentration of XY, the value of

Λ_{m}

is 145.0 S c

m^{2}

l^{- 1}

. The limiting molar conductivity of

Y^{-}

ion (

λ_{Y^{-}}^{0}

, in S c

m^{2}

l^{- 1}

) at 298 K will be (Given :

λ_{X^{+}}^{0} = 74.0

S c

m^{2}

l^{- 1}

)

(1)

80.0

(2)

100.0

(3)

90.0

(4)

76.0

Q63Single correctSome Basic Concepts of Chemistry

The amount of carbon dioxide evolved upon complete combustion of 116 g of n-butane is (Given : atomic mass in amu H = 1, C = 12 and O = 16)

(1)

352

(2)

322

(3)

176

(4)

362

Q64Single correctChemical Kinetics

For an elementary chemical reaction, the Arrhenius plot is given below. If the energy of activation is 6.64 kJ mo

l^{- 1}

and R = 8.3 J

K^{- 1}

l^{- 1}

, the temperature at which the rate constant becomes

e^{2}

n^{- 1}

, is

Arrhenius plot: ln k falls linearly with 1/T, meeting the ln k axis at an intercept of 6, with ln k ticks marked at 2, 4, 6 and 8.

(1)

125

(2)

150

(3)

200

(4)

250

Q65Single correctThe d- and f-Block Elements / Redox

Given below are two statements :

Statement - I

: Heating NaCl with concentrated

H_{2} SO_{4}

and

MnO_{2}

results in oxidation of Mn.

Statement - II

: Heating NaI with concentrated

H_{2} SO_{4}

and

MnO_{2}

results in reduction of Mn. In light of the above statements, choose the most appropriate answer from the options given below.

(1)

Both

St a t e m e n t - I

and

St a t e m e n t - II

are correct

(2)

Both

St a t e m e n t - I

and

St a t e m e n t - II

are incorrect

(3)

St a t e m e n t - I

is correct but

St a t e m e n t - II

is incorrect

(4)

St a t e m e n t - I

is incorrect but

St a t e m e n t - II

is correct

Q66Single correctCoordination Compounds

Among the species given below, the spin-only magnetic moment is highest for (Given : Atomic number of Ti = 22, Mn = 25, Fe = 26 and Co = 27)

(1)

[Mn(CN)_{6}]^{3 -}

(2)

[Fe(CN)_{6}]^{3 -}

(3)

[Co(NH_{3})_{6}]^{3 +}

(4)

[Ti(H_{2} O)_{6}]^{3 +}

Q67Single correctThe d- and f-Block Elements

The lanthanide ion having four unpaired electrons is (Given : Atomic numbers of Ce = 58, Nd = 60, Tb = 65 and Ho = 67)

(1)

Nd^{3 +}

(2)

Ce^{3 +}

(3)

Tb^{3 +}

(4)

Ho^{3 +}

Q68Single correctCoordination Compounds

The formula of tetraammineaquachloridocobalt(III) chloride is

(1)

[Co(NH_{3})_{4} Cl_{2}] \times H_{2} O

(2)

[Co(NH_{3})_{4}] Cl_{3} \times H_{2} O

(3)

[Co(NH_{3})_{4} (H_{2} O) Cl] Cl

(4)

[Co(NH_{3})_{4} (H_{2} O) Cl] Cl_{2}

Q69Single correctThermodynamics

Consider the reversible processes for 1.0 mol of an ideal gas as shown in the figure.

w_{1}

w_{2}

w_{3}

and

w_{4}

represent work done (in calories) in the processes 1, 2, 3 and 4 respectively;

Δ U_{2}

and

Δ U_{4}

are changes in the internal energy for the processes 2 and 4, respectively. [use R = 2 cal

K^{- 1}

l^{- 1}

] The correct option is

Pressure-volume diagram of a four-process cycle: 1 from state (p1,V1,T1) to (p2,V2,T1), 2 down to (p3,V3,T2), 3 back to (p4,V4,T2) and 4 up to the start. The figure states that processes 2 and 4 are adiabatic.

(1)

w_{1} + w_{3} = - 2 T_{1} ln \frac{V _{2}}{V _{1}} - 2 T_{2} ln \frac{V _{4}}{V _{3}}

(2)

w_{2} + w_{4} = Δ U_{2} - Δ U_{4}

(3)

w_{1} + w_{2} = 2 T_{1} ln \frac{V _{2}}{V _{1}}

(4)

w_{1} + w_{2} + w_{3} + w_{4} = 0

Q70Single correctClassification of Elements and Periodicity

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: The first ionization enthalpy of O is lower than that of N and F. Reason R: The loss of an electron from O leads to stable half-filled p orbital In light of the above statements, choose the most appropriate answer from the options given below:

(1)

Both A and R are correct and R is the correct explanation of A

(2)

Both A and R are correct and R is NOT the correct explanation of A

(3)

A is correct but R is not correct

(4)

A is not correct but R is correct

Q71Single correctSolutions

Consider the following statements about the solutions formed by mixing two liquids. A. An ideal solution thus formed obeys Raoult's law throughout the composition range. B. Mixture of chloroform and acetone shows negative deviation from Raoult's law. C. Mixture of aniline and phenol shows positive deviation from Raoult's law.

(1)

A and B only

(2)

B and C only

(3)

A only

(4)

A and C only

Q72Single correctOrganic Chemistry: Some Basic Principles and Techniques

One of the products formed in the following reaction is

Cyclohexylmagnesium bromide plus cyclohexylamine, reacting.

(1)

Dicyclohexylamine: two cyclohexane rings bridged by an N-H.

(2)

2-Cyclohexylcyclohexan-1-amine: two rings joined directly, with an NH2 on one of them.

(3)

Bicyclohexyl: two cyclohexane rings joined directly, no substituent.

(4)

Cyclohexane: a single unsubstituted ring.

Q73Single correctThe s-Block Elements

The correct statement is

(1)

Boron has a maximum covalency of four.

(2)

Beryllium has three valence orbitals.

(3)

Magnesium has a maximum covalency of four.

(4)

Aluminium has five valence orbitals.

Q74Single correctThermodynamics

A protein undergoes reversible thermal denaturation from its initial state N to denatured state D according to

N ⇌ D

. At 6

0^{\circ}

C, the concentrations of both N and D are equal at equilibrium, and the standard enthalpy change of denaturation is 666 kJ mo

l^{- 1}

. The standard entropy change (

Δ S^{\circ}

in kJ

K^{- 1}

l^{- 1}

) of the protein upon denaturation at 6

0^{\circ}

C is closest to

(1)

2.0

(2)

2000.0

(3)

333.0

(4)

11.1

Q75Single correctChemical Bonding and Molecular Structure

Match the species in List-I with their geometry in List-II.

List-I	List-II
A. $PCl_{5}$	I. Tetrahedral
B. $BrF_{5}$	II. Square Planar
C. $BF_{4}^{-}$	III. Trigonal bipyramidal
D. $[Ni(CN)_{4}]^{2 -}$	IV. Square pyramidal

(1)

A-IV, B-III, C-I, D-II

(2)

A-III, B-IV, C-I, D-II

(3)

A-III, B-I, C-II, D-IV

(4)

A-III, B-II, C-I, D-IV

Q76Single correctHydrocarbons / Stereochemistry

Given below are two statements : Statement I : trans-But-2-ene upon treatment with B

r_{2}

in CC

l_{4}

gives the following product. Statement II : cis-But-2-ene upon treatment with alkaline KMn

O_{4}

gives the following product. In the light of the above statements, choose the most appropriate answer from the options given below.

Two Newman projections, one per statement: the first has Br at the front top, H and Me on the front lower bonds, and H, Me, Br on the back bonds; the second has OH at the front top, H and Me on the front lower bonds, and H, OH, Me on the back bonds.

(1)

Both Statement I and Statement II are correct

(2)

Both Statement I and Statement II are incorrect

(3)

Statement I is correct but Statement II is incorrect

(4)

Statement I is incorrect but Statement II is correct

Q77Single correctHydrocarbons

Consider the following reaction sequences and choose the correct option.

Ph-C(triple bond)C-Me: treated with Na in liquid NH3 it gives L, and with H2 over Pd/C (Lindlar's catalyst) it gives K; L with HBr and benzoyl peroxide gives N, and K with HBr gives M.

(1)

K and L are geometrical isomers

(2)

K and L are enantiomers

(3)

M and N are geometrical isomers

(4)

M and N are stereoisomers

Q78Single correctCoordination Compounds

The complex which have facial and meridional isomers is (Given : py = pyridine and en =

H_{2}

-

H_{2}

-

H_{2}

-

H_{2}

)

(1)

[Cr(py)_{3} (Cl)_{3}]

(2)

[Cr(H_{2} O)_{6}]^{3 +}

(3)

[Co(NH_{3})_{4} (H_{2} O)_{2}]^{3 +}

(4)

[Ni(en)_{2} (H_{2} O)_{2}]^{2 +}

Q79Single correctAmines

Identify the reactions which give aniline as the major product. Choose the correct answer from the options given below.

Four labelled reactions: A benzonitrile with LiAlH4, B benzamide with KOH and Br2, C nitrobenzene with NaBH4, D acetanilide with HCl and water under heat.

(1)

A and B only

(2)

B and D only

(3)

A and C only

(4)

C and D only

Q80Single correctBiomolecules

Match the vitamins in List I with their sources in List II

List I	List II
A. vitamin A	I. meat
B. vitamin $B_{12}$	II. sunflower oil
C. vitamin E	III. green leafy vegetables
D. vitamin K	IV. carrots

(1)

A-II, B-III, C-IV, D-I

(2)

A-IV, B-I, C-II, D-III

(3)

A-IV, B-II, C-I, D-III

(4)

A-III, B-I, C-IV, D-II

Q81Single correctRedox Reactions

The correct decreasing order of oxidation state of the underlined atom in each molecule is

(1)

\underline{P}_{4} O_{10} > \underline{S} O_{3} > H_{2} \underline{O}

(2)

\underline{N}_{2} O_{5} > \underline{Al}_{2} O_{3} > H_{2} \underline{S}

(3)

\underline{Pb} O_{2} > \underline{N}_{2} O_{3} > \underline{S} O_{3}

(4)

\underline{P}_{4} O_{6} > \underline{Cl}_{2} O_{7} > \underline{Al} H_{3}

Q82Single correctAldehydes, Ketones and Carboxylic Acids

The compound that CANNOT be obtained from the aldol condensation reaction shown below, is

2,2-Dimethylcyclopentan-1-one plus benzaldehyde, with NaOH and heat.

(1)

2,2-Dimethylcyclopentanone bearing a 2,2-dimethylcyclopent-1-en-1-yl group on the ring carbon opposite the gem-dimethyl.

(2)

2,2-Dimethyl-5-benzylidenecyclopentan-1-one with the phenyl on the opposite side of the exocyclic double bond from the carbonyl.

(3)

Two rings joined by an exocyclic carbon-carbon double bond: 2,2-dimethylcyclopentanone linked to a 2,2-dimethylcyclopentylidene.

(4)

2,2-Dimethyl-5-benzylidenecyclopentan-1-one with the phenyl on the same side of the exocyclic double bond as the carbonyl.

Q83Single correctOrganic Chemistry: Some Basic Principles and Techniques

Among the following, the compound having conjugated double bonds is

(1)

hepta-1,3-diene

(2)

hepta-1,4-diene

(3)

hepta-1,5-diene

(4)

hepta-1,6-diene

Q84Single correctAmines / Carboxylic Acids

Given below are two statements: Statement-I : Oxidation of p-nitrotoluene with acidic KMn

O_{4}

gives an acid that is stronger than benzoic acid. Statement-II : Reduction of p-nitrotoluene with Sn/HCl followed by neutralization gives an amine that is more basic than aniline. In light of the above statements, choose the most appropriate answer from the options given below.

(1)

Both Statement-I and Statement-II are correct

(2)

Both Statement-I and Statement-II are incorrect

(3)

Statement-I is correct but Statement-II is incorrect

(4)

Statement-I is incorrect but Statement-II is correct

Q85Single correctThe d- and f-Block Elements

The green paramagnetic species formed by heating KMn

O_{4}

at 513 K is

(1)

K_{2} MnO_{4}

(2)

Mn_{3} O_{4}

(3)

MnO

(4)

KO_{2}

Q86Single correctAldehydes, Ketones and Carboxylic Acids

Consider the following reaction, and choose the correct option.

Toluene treated with (i) CrO2Cl2 in CS2 and then (ii) H3O+, giving P.

(1)

On treating compound P with saturated NaHC

O_{3}

solution, brisk effervescence is observed

(2)

Compound P can be prepared by treating benzene with anhydrous AlC

l_{3}

and C

H_{3}

COCl

(3)

On treatment with bromine water, compound P gives a white precipitate

(4)

Compound P is obtained by the hydrogenation of benzoyl chloride with Pd on BaS

O_{4}

Q87Single correctCoordination Compounds

A 1 : 3 electrolyte in an aqueous solution is

(1)

[CoCl_{2} (NH_{3})_{4}] Cl

(2)

[CoCl (NH_{3})_{5}] Cl_{2}

(3)

[Co(NH_{3})_{6}] Cl_{3}

(4)

[Co(NH_{3})_{3} (NO_{2})_{3}]

Q88Single correctStructure of Atom

Consider the following schematic plots of orbital wavefunction (

ψ_{r}

) against distance (r) from the nucleus. The figure representing two radial nodes in the orbital is

Four plots of the radial wavefunction against r: A decays without changing sign; B crosses zero once and returns to zero from below; C crosses zero, dips, then rises to a positive hump before returning to zero; D crosses zero later after a rounded shoulder, dips and returns to zero.

(1)

(2)

(3)

(4)

Q89Single correctOrganic Chemistry: Some Basic Principles and Techniques

Arrange the following compounds in the increasing order of polarity. A. C

H_{3} C H_{2} OC H_{2} C H_{3}

B. C

H_{3} C H_{2}

OH C. C

H_{3} COC H_{3}

D. C

H_{3}

COOH Choose the correct answer from the options given below.

(1)

A < B < C < D

(2)

C < A < D < B

(3)

C < A < B < D

(4)

A < C < B < D

Q90Single correctChemical Bonding and Molecular Structure

The highest occupied molecular orbital for N

e_{2}

(1)

π_{2 p}

(2)

σ_{2 p}

(3)

π_{2 p}^{*}

(4)

σ_{2 p}^{*}

Biology90 questions

Q91Single correctLocomotion and Movement

The number of vertebrae in a human is ________.

(1)

7

(2)

12

(3)

26

(4)

206

Q92Single correctBiological Classification

Symbiotic association between fungi and algae are called ________.

(1)

lichens

(2)

sponges

(3)

mycorrhiza

(4)

chrysophytes

Q93Single correctThe Living World

Cell theory was formulated by ________.

(1)

Schleiden and Schwann

(2)

Robert Brown

(3)

Singer and Nicolson

(4)

Antonie Von Leeuwenhoek

Q94Single correctCell - The Unit of Life

Which of the following are characteristics of prokaryotic cells? (a) Ribosomes are made of 50S and 30S subunits (b) They can have plasmids (c) They contain mesosome (d) They have peroxisomes Choose the correct answer from the options given below :

(1)

(b) and (c) only

(2)

(a) and (c) only

(3)

(a), (c) and (d) only

(4)

(a), (b) and (c) only

Q95Single correctNeural Control and Coordination

Which of the following is not a part of human central neural system?

(1)

Arachnoid

(2)

Dura mater

(3)

Pia mater

(4)

Pericardium

Q96Single correctCell - The Unit of Life

Mitochondrial inner membrane encloses ___________ .

(1)

matrix

(2)

cytosol

(3)

mucus

(4)

aqueous humor

Q97Single correctCell - The Unit of Life

Match List-I with List-II.

List-I	List-II
A.. Cristae	I.. Flat membrane sacs in stroma of chloroplast
B.. Cisternae	II.. Infoldings in mitochondria
C.. Thylakoids	III.. Cell membrane
D.. Phospholipid	IV.. Disc shaped sacs in the Golgi apparatus

(1)

A-III, B-IV, C-I, D-II

(2)

A-II, B-IV, C-I, D-III

(3)

A-II, B-IV, C-III, D-I

(4)

A-IV, B-III, C-I, D-II

Q98Single correctCell - The Unit of Life

The plastid that stores xanthophyll is known as __________.

(1)

chloroplast

(2)

chromoplast

(3)

aleuroplast

(4)

amyloplast

Q99Single correctChemical Coordination and Integration

Which of the following statements related to pituitary gland are correct? (a) It is divided anatomically into adenohypophysis and neurohypophysis (b) It secretes follicle stimulating hormone (c) It secretes melanocyte stimulating hormone (d) It does not secrete prolactin Choose the correct answer from the options given below :

(1)

(a) and (b) only

(2)

(a), (b) and (c) only

(3)

(4)

(b) and (c) only

Q100Single correctPhotosynthesis in Higher Plants

Photorespiration reaction catalyzed by RuBisCo is shown below:

RuBP + O_{2} \to 3-Phosphoglycerate + X

. Identify "X" from the given option:

(1)

Phosphoenolpyruvate

(2)

2-Phosphoglycolate

(3)

Oxaloacetate

(4)

Malate

Q101Single correctHuman Health and Disease

Mad cow disease is caused by _______.

(1)

prions

(2)

viroids

(3)

Aspergillus sp.

(4)

Mycoplasma sp.

Q102Single correctPhotosynthesis in Higher Plants

Which pigment has absorption peak at 700 nm in the photosynthetic reaction centre PS I (P700)?

(1)

Chlorophyll b

(2)

Chlorophyll a

(3)

Xanthophylls

(4)

Carotenoids

Q103Single correctBreathing and Exchange of Gases

In water, frogs respire using _____________.

(1)

skin

(2)

buccal cavity

(3)

lungs

(4)

trachea

Q104Single correctLocomotion and Movement

Which of the following represents the correct sequence of arrangement of bones in the lower limb of humans?

(1)

Femur-tibia-patella-tarsal

(2)

Patella-femur-tibia-tarsal

(3)

Femur-patella-tibia-tarsal

(4)

Femur-tarsal-patella-tibia

Q105Single correctMorphology of Flowering Plants

Phyllotaxy is the pattern of arrangement of ________.

(1)

leaves

(2)

flowers

(3)

fruits

(4)

sepals

Q106Single correctBiomolecules

Match List-I with List-II.

List-I	List-II
A.. Starch	I.. Fights infection
B.. Antibody	II.. Energy storage
C.. Concanavalin A	III.. Glucose transport
D.. Glut-4	IV.. Lectin

(1)

A-I, B-II, C-IV, D-III

(2)

A-II, B-I, C-IV, D-III

(3)

A-II, B-I, C-III, D-IV

(4)

A-I, B-II, C-III, D-IV

Q107Single correctAnimal Kingdom

Given below are two statements : Statement I : When any plane passing through the central axis of the body divides the organism into two identical halves, it is called radial symmetry. Statement II : In phylum Echinodermata, both adults and larvae are radially symmetrical. In the light of the above statements, choose the most appropriate answer from the options given below :

(1)

Both Statement I and Statement II are correct

(2)

Both Statement I and Statement II are incorrect

(3)

Statement I is correct but Statement II is incorrect

(4)

Statement I is incorrect but Statement II is correct

Q108Single correctCell - The Unit of Life

Endomembrane system includes _______.

(1)

endoplasmic reticulum, Golgi complex, lysosomes and vacuole

(2)

endoplasmic reticulum, chloroplast, peroxisomes and vacuole

(3)

mitochondria, chloroplast, peroxisomes and vacuole

(4)

Golgi complex, chloroplast, lysosomes and vacuole

Q109Single correctRespiration in Plants

How many molecules of pyruvic acid are produced at the end of glycolysis from 206 molecules of glucose?

(1)

206

(2)

309

(3)

103

(4)

412

Q110Single correctPlant Growth and Development

Which of the following plant growth regulators is used as herbicide?

(1)

2, 4-D

(2)

Kinetin

(3)

Abscisic acid

(4)

Gibberellin

Q111Single correctPlant Kingdom

Given below are two statements: Statement I: In gymnosperms, the male and female gametophytes remain within the sporangia. Statement II: In gymnosperms, seeds are not covered. In the light of the above statements, choose the most appropriate answer from the options given below:

(1)

Both Statement I and Statement II are correct

(2)

Both Statement I and Statement II are incorrect

(3)

Statement I is correct but Statement II is incorrect

(4)

Statement I is incorrect but Statement II is correct

Q112Single correctBiological Classification

Match List-I with List-II.

List-I	List-II
A.. Spherical	I.. Vibrio
B.. Rod	II.. Cocci
C.. Comma	III.. Spirilla
D.. Spirillum	IV.. Bacilli

(1)

A-I, B-III, C-II, D-IV

(2)

A-III, B-II, C-I, D-IV

(3)

A-II, B-I, C-IV, D-III

(4)

A-II, B-IV, C-I, D-III

Q113Single correctMorphology of Flowering Plants

Which of the following are characteristic features of Solanaceae family? (a) Flowers are bisexual and actinomorphic (b) Calyx have five sepals and are united (c) Androecium have five stamens and are epipetalous (d) Ovary is inferior Choose the correct answer from the options given below :

(1)

(a), (b) and (c) only

(2)

(d) only

(3)

(a) and (b) only

(4)

(b), (c) and (d) only

Q114Single correctPhotosynthesis in Higher Plants

Select the correct sequence of experiments that led to a gradual understanding of photosynthesis in green plants.

(1)

Absorption spectra of chlorophyll a and b

\to

production of glucose

\to

release of oxygen

\to

role of air

(2)

Role of air

\to

release of oxygen

\to

production of glucose

\to

absorption spectra of chlorophyll a and b

(3)

Release of oxygen

\to

production of glucose

\to

absorption spectra of chlorophyll a and b

\to

role of air

(4)

Production of glucose

\to

role of air

\to

release of oxygen

\to

absorption spectra of chlorophyll a and b

Q115Single correctBody Fluids and Circulation

The number of action potentials generated by sino-atrial node (SAN) in a healthy human is ________ per minute.

(1)

28 - 30

(2)

70 – 75

(3)

100 - 110

(4)

120 - 140

Q116Single correctPhotosynthesis in Higher Plants

How many turns of Calvin cycle are required for the formation of three molecules of glucose?

(1)

(2)

(3)

(4)

Q117Single correctBody Fluids and Circulation

Which of the following statements is

incorrect

(1)

Blood coagulates in response to an injury

(2)

Blood clot consists of fibrins

(3)

Fibrin is produced from fibrinogen

(4)

Fibrinogen is produced from fibrin

Q118Single correctThe Living World

Choose the correct answer from the options given below :

List-I	List-II
A.. Family	I.. Sapindales
B.. Genus	II.. Dicotyledonae
C.. Class	III.. Anacardiaceae
D.. Phylum	IV.. Angiospermae
E.. Order	V.. $Mangifera$

(1)

A-I, B-V, C-II, D-IV, E-III

(2)

A-II, B-I, C-III, D-IV, E-V

(3)

A-II, B-III, C-V, D-I, E-IV

(4)

A-III, B-V, C-II, D-IV, E-I

Q119Single correctThe Living World

Arrange the following taxonomic categories in ascending order : (a) Genus (b) Class (c) Order (d) Phylum (e) Family (f) Kingdom (g) Species

(1)

(g), (a), (e), (c), (b), (d), (f)

(2)

(a), (c), (d), (g), (f), (b), (e)

(3)

(g), (c), (d), (b), (e), (a), (f)

(4)

(f), (c), (b), (g), (d), (e), (a)

Q120Single correctSexual Reproduction in Flowering Plants

Choose the correct answer from the options given below :

List-I	List-II
A.. Marginal placentation	I.. $Argemone$
B.. Axile placentation	II.. Tomato
C.. Parietal placentation	III.. $Primrose$
D.. Free central placentation	IV.. Pea

(1)

A-II, B-IV, C-I, D-III

(2)

A-IV, B-II, C-III, D-I

(3)

A-IV, B-III, C-I, D-II

(4)

A-IV, B-II, C-I, D-III

Q121Single correctPlant Kingdom

Sphenopsida class belongs to _____________.

(1)

bryophytes

(2)

angiosperms

(3)

gymnosperms

(4)

pteridophytes

Q122Single correctPhotosynthesis in Higher Plants

Which of the following statements regarding photorespiration are correct? (a) Do not occur in C3 plants (b)

CO_{2}

is consumed and

O_{2}

is generated (c) Phosphoglycolate is formed (d) No synthesis of ATP and NADPH

(1)

(a) and (d) only

(2)

(3)

(b) and (d) only

(4)

(a) and (b) only

Q123Single correctCell - The Unit of Life

Smooth endoplasmic reticulum ____________ .

(1)

has ribosomes attached to its surface

(2)

is the major site for the synthesis of lipids

(3)

is actively involved in protein synthesis

(4)

is a site for the synthesis of carbohydrates

Q124Single correctChemical Coordination and Integration

Which one of the following statements is

incorrect

(1)

α

-cells of pancreas secrete glucagon

(2)

α

-cells of pancreas secrete insulin

(3)

Glucagon stimulates glycogenolysis

(4)

β

-cells of pancreas secrete insulin

Q125Single correctThe Living World

Genus represents ___________.

(1)

an individual plant or animal

(2)

a population of plants and animals

(3)

a group of closely related species

(4)

a group of closely related families

Q126Single correctBiological Classification

Which of the following is

not

a prokaryote?

(1)

Bacteria

(2)

Blue green algae

(3)

Mycoplasma

(4)

Fungi

Q127Single correctPlant Growth and Development

Which of the following plant growth regulators promotes internode elongation prior to flowering in cabbage?

(1)

Abscisic acid

(2)

Gibberellin

(3)

Indole butyric acid

(4)

Ethephon

Q128Single correctCell Cycle and Cell Division

The correct sequence of adult cell cycle phases is ________ .

(1)

G1-G2-S-M

(2)

G1-M-G2-S

(3)

G1-S-G2-M

(4)

S-M-G2-G1

Q129Single correctSexual Reproduction in Flowering Plants

Choose the correct answer from the options given below :

List-I	List-II
A.. Fusion of protoplasms between gametes	I.. Meiosis
B.. Fusion of two nuclei	II.. Plasmogamy
C.. Generation of haploid spores	III.. Karyogamy

(1)

A-II, B-III, C-I

(2)

A-II, B-I, C-III

(3)

A-III, B-II, C-I

(4)

A-I, B-III, C-II

Q130Single correctAnimal Kingdom

Given below are two statements : Statement I : The class name Reptilia refers to creeping or crawling mode of locomotion. Statement II : All organisms belonging to Reptilia have three chambered heart. In the light of the above statements, choose the

most appropriate

answer from the options given below:

(1)

Both Statement I and Statement II are correct

(2)

Both Statement I and Statement II are incorrect

(3)

Statement I is correct but Statement II is incorrect

(4)

Statement I is incorrect but Statement II is correct

Q131Single correctCell Cycle and Cell Division

Given below are two statements : Statement I : Chromosomes are fully condensed at the end of prophase I. Statement II : Meiosis I resembles mitosis. In the light of the above statements, choose the

most appropriate

answer from the options given below :

(1)

Both Statement I and Statement II are true

(2)

Both Statement I and Statement II are false

(3)

Statement I is correct, but Statement II is false

(4)

Statement I is incorrect, but Statement II is true

Q132Single correctAnimal Kingdom

Which of the following is

not

a characteristic of chordates?

(1)

Presence of notochord

(2)

Central nervous system is dorsal

(3)

Absence of gills

(4)

Presence of post anal part (tail)

Q133Single correctPlant Growth and Development

Length of the stem at time 0 is 20 cm. The arithmetic growth rate is 30 cm per day. What is the length of the stem at the end of the

7^{th}

day?

(1)

50 cm

(2)

170 cm

(3)

230 cm

(4)

460 cm

Q134Single correctBiomolecules

Arrange the following elements in descending order of their contribution to percentage weight of the human body. (a) Oxygen (b) Carbon (c) Hydrogen (d) Nitrogen

(1)

(a), (b), (c), (d)

(2)

(c), (a), (b), (d)

(3)

(b), (c), (d), (a)

(4)

(b), (a), (c), (d)

Q135Single correctNeural Control and Coordination

In frogs, the number of pairs of cranial nerves arising from the brain are ______.

(1)

(2)

(3)

(4)

Q136Single correctMicrobes in Human Welfare

Which of the following is used as a clot buster?

(1)

Streptokinase

(2)

Penicillin

(3)

Cyclosporin A

(4)

Statins

Q137Single correctBiotechnology and its Applications

The inactive form of Bt toxin is converted to the active form in the insect gut _______

(1)

due to alkaline pH

(2)

due to acidic pH

(3)

by proteases

(4)

by nucleases

Q138Single correctPrinciples of Inheritance and Variation

Given below are two statements : Statement I : Down's syndrome is caused by the absence of one of the X-chromosomes. Statement II : Turner's syndrome is caused by the presence of an additional copy of the chromosomes. In the light of the above statements, choose the correct answer from the options given below :

(1)

Both Statement I and Statement II are correct

(2)

Both Statement I and Statement II are incorrect

(3)

Statement I is correct but Statement II is incorrect

(4)

Statement I is incorrect but Statement II is correct

Q139Single correctHuman Health and Disease

Which of the following disease is not sexually transmitted?

(1)

Syphilis

(2)

Tuberculosis

(3)

Gonorrhoea

(4)

Genital warts

Q140Single correctHuman Reproduction

Sperm motility is due to ___________.

(1)

flagellar movement

(2)

ciliary movement

(3)

amoeboid movement

(4)

muscular movement

Q141Single correctEvolution

Natural selection can lead to _________. (a) stabilisation (b) genetic drift (c) directional change (d) disruption Choose the correct answer from the options given below :

(1)

(a) only

(2)

(a), (c) and (d) only

(3)

(a), (b), (c) and (d)

(4)

(a) and (c) only

Q142Single correctReproductive Health

The method of directly injecting a sperm into ovum in assisted reproductive technology is called :

(1)

Gamete intra fallopian transfer (GIFT)

(2)

Zygote intra fallopian transfer (ZIFT)

(3)

Intra cytoplasmic sperm injection (ICSI)

(4)

Embryo transfer (ET)

Q143Single correctHuman Reproduction

Which of the following struture is not a part of the male reproductive system?

(1)

Rete testis

(2)

Epididymis

(3)

Vasa efferentia

(4)

Infundibulum

Q144Single correctBiodiversity and Conservation

Arrange the following in descending order of number of species in the Amazonian rain forest. (a) Plants (b) Birds (c) Fishes (d) Invertebrates (e) Mammals Choose the correct answer from the options given below :

(1)

(2)

(d) > (a) > (c) > (b) > (e)

(3)

(e) > (b) > (a) > (c) > (d)

(4)

(b) > (a) > (d) > (c) > (e)

Q145Single correctHuman Reproduction

Given below are two statements: Statement I : Ovulation is caused by LH surge leading to rupture of Graafian follicles. Statement II: Graafian follicle remaining after ovulation transform into corpus luteum and secretes large amount of estrogen. In the light of the above statements, choose the most appropriate answer from the options given below:

(1)

Both Statement I and Statement II are correct

(2)

Both Statement I and Statement II are incorrect

(3)

Statement I is correct but Statement II is incorrect

(4)

Statement I is incorrect but Statement II is correct

Q146Single correctEcosystem

Which of the following are primary consumers in a food chain?

(1)

Parasites

(2)

Predators

(3)

Herbivores

(4)

Carnivores

Q147Single correctEvolution

A population of diploid organisms is at Hardy-Weinberg equilibrium. If the frequency of allele A is 0.1, the frequency of AA is _______.

(1)

0.01

(2)

0.02

(3)

0.10

(4)

0.99

Q148Single correctChemical Coordination and Integration

Choose the correct answer from the options given below:

List-I	List-II
A. Excess growth hormone	I. Reabsorption of water and electrolytes in kidney
B. Luteinizing hormone	II. Contraction of uterus during child birth
C. Vasopressin	III. Acromegaly
D. Oxytocin	IV. Ovulation

(1)

A-III, B-IV, C-II, D-I

(2)

A-III, B-IV, C-I, D-II

(3)

A-II, B-IV, C-I, D-III

(4)

A-IV, B-III, C-I, D-II

Q149Single correctBody Fluids and Circulation

The opening between the right atrium and the right ventricle is guarded by _________.

(1)

bicuspid valve

(2)

tricuspid valve

(3)

semilunar valve

(4)

sino-atrial node

Q150Single correctBreathing and Exchange of Gases

Sponges exchange

O_{2}

with

CO_{2}

by ___________.

(1)

simple diffusion over their entire body surfaces

(2)

moist cuticle

(3)

tracheal tubes

(4)

gills

Q151Single correctSexual Reproduction in Flowering Plants

How many theca are present in each lobe of a typical bilobed angiosperm anther?

(1)

(2)

(3)

(4)

Q152Single correctNeural Control and Coordination

Muscle contraction is initiated by a signal sent by the central nervous system by the release of _____ .

(1)

acetyl choline

(2)

acetyl coenzyme A

(3)

cyclic guanine monophosphate

(4)

cyclic adenine monophosphate

Q153Single correctMolecular Basis of Inheritance

Which of the following statements about lac-operon is correct?

(1)

Gene

i

is constitutively expressed

(2)

Lactose activates repressor to bind to the operator

(3)

Genes

i

z

y

and

a

share single common promoter

(4)

Galactose can act as an inducer of lac operon

Q154Single correctSexual Reproduction in Flowering Plants

Which of the following in female gametophyte of an angiosperm helps in guiding the pollen tube for fertilizing the eggs?

(1)

Antipodals

(2)

Synergids

(3)

Central cells

(4)

Polar nucleus

Q155Single correctSexual Reproduction in Flowering Plants

Which of the following plant produces non-albuminous seeds?

(1)

Wheat

(2)

Maize

(3)

Barley

(4)

Pea

Q156Single correctSexual Reproduction in Flowering Plants

If the diploid chromosome number of typical angiosperm is 36, what would be the chromosome number in its endosperm?

(1)

(2)

(3)

(4)

Q157Single correctExcretory Products and their Elimination

Which of the following statements about the reabsorption process in Henle's loop are correct? (a) The descending limb of Henle's loop is permeable to water but almost impermeable to electrolytes. (b) Urine gets concentrated in Henle's loop. (c) Reabsorption of

Na^{+}

and water takes place in Henle's loop. (d) Active or passive transport of electrolytes occurs in the ascending limb of Henle's loop. Choose the correct answer from the options given below:

(1)

(a) and (b) only

(2)

(b), (c) and (d) only

(3)

(a), (b) and (c) only

(4)

(a), (b) and (d) only

Q158Single correctLocomotion and Movement

Which of the following is the correct order of arrangement of vertebrate column from the head to toe?

(1)

Cervical vertebra, thoracic vertebra, sacrum, lumbar vertebra

(2)

Sacrum, lumbar vertebra, thoracic vertebra, cervical vertebra

(3)

Cervical vertebra, lumbar vertebra, thoracic vertebra, sacrum

(4)

Cervical vertebra, thoracic vertebra, lumbar vertebra, sacrum

Q159Single correctEvolution

Which of the following is

not

evidence for evolution?

(1)

Convergent evolution of traits like wings of birds and butterflies

(2)

Paleontological evidence from fossil records

(3)

Embryological support for evolution as proposed by Ernst Heckel

(4)

Divergent evolution of anatomical structures such as forelimbs

Q160Single correctEvolution

Given below are two statements :

Statement I :

Modern

Homo sapiens

arose in Australia and moved across continents.

Statement II :

Homo sapiens

arose around 75000 to 10000 years ago. In the light of the above statements, choose the

most appropriate

answer from the options given below :

(1)

Both

Statement I

and

Statement II

are correct

(2)

Both

Statement I

and

Statement II

are incorrect

(3)

Statement I

is correct but

Statement II

is incorrect

(4)

Statement I

is incorrect but

Statement II

is correct

Q161Single correctOrganisms and Populations

Consider a population of 10 million cells. Given the per-capita birth rate of 0.002 (per unit time) and the per-capita death rate of 0.002 (per unit time), the expected number of cells after 10 generations is ______.

(1)

1 million

(2)

5 million

(3)

10 million

(4)

100 million

Q162Single correctBiotechnology: Principles and Processes

During PCR, primers bind to the DNA strands in the ______ step.

(1)

denaturation

(2)

extension

(3)

annealing

(4)

ligation

Q163Single correctOrganisms and Populations

Given below are two statements : one is labelled as

Assertion A

and the other is labelled as

Reason R

Assertion A :

The logistic growth model of populations is considered more realistic than the exponential growth model.

Reason R :

Resources are finite. In the light of the above statements, choose the

most appropriate

answer from the options given below :

(1)

Both

A

and

R

are correct and

R

is the correct explanation of

A

(2)

Both

A

and

R

are correct but

R

is not the correct explanation of

A

(3)

A

is correct but

R

is not correct

(4)

A

is not correct but

R

is correct

Q164Single correctEvolution

Adaptive radiation in placental mammals and Australian Marsupials leading to similarity between distant species is an example of ______.

(1)

divergent evolution

(2)

convergent evolution

(3)

founder effect

(4)

genetic drift

Q165Single correctHuman Health and Disease

Which of the following are secondary lymphoid organs? (a) Bone marrow (b) Tonsils (c) Spleen (d) Thymus Choose the

correct

answer from the options given below:

(1)

(a) and (b) only

(2)

(b) and (c) only

(3)

(b) and (d) only

(4)

(a) and (d) only

Q166Single correctHuman Reproduction

Which of the following hormone is

not

secreted by human placenta?

(1)

hCG

(2)

Estrogen

(3)

Progesterone

(4)

Q167Single correctMolecular Basis of Inheritance

Which of the following enzymes synthesizes precursor mRNA?

(1)

RNA polymerase I

(2)

RNA polymerase II

(3)

RNA polymerase III

(4)

DNA polymerase

Q168Single correctBiotechnology: Principles and Processes

Given below are two statements :

Statement I :

Plasmids are autonomously replicating DNA.

Statement II :

Plasmids are extrachromosomal DNA. In the light of the above statements, choose the

most appropriate

answer from the options given below :

(1)

Both

Statement I

and

Statement II

are correct

(2)

Both

Statement I

and

Statement II

are incorrect

(3)

Statement I

is correct but

Statement II

is incorrect

(4)

Statement I

is incorrect but

Statement II

is correct

Q169Single correctPrinciples of Inheritance and Variation

For a person with blood group 'O', which of the following is

not

a possible combination of parents' blood group genotypes?

(1)

Father :

I^{A} i

and Mother :

I^{B} i

(2)

Father :

I^{A} i

and Mother :

I^{A} i

(3)

Father :

I^{B} i

and Mother :

I^{B} i

(4)

Father :

I^{A} I^{B}

and Mother :

I^{A} i

Q170Single correctEvolution

Given below are two statements : one is labelled as

Assertion A

and the other is labelled as

Reason R

Assertion A :

Forelimbs of human and bats are homologous.

Reason R :

Forelimbs of humans and bats have similar anatomical structure. In the light of the above statements, choose the

most appropriate

answer from the options given below :

(1)

Both

A

and

R

are correct and

R

is the correct explanation of

A

(2)

Both

A

and

R

are true, but

R

is not the correct explanation of

A

(3)

A

is true but

R

is false

(4)

A

is false but

R

is true

Q171Single correctHuman Health and Disease

Colostrum, secreted by mother during initial days of lactation, is abundant in ______.

(1)

IgG

(2)

IgM

(3)

IgA

(4)

IgD

Q172Single correctOrganisms and Populations

Given below are two statements : one is labelled as

Assertion A

and the other is labelled as

Reason R

Assertion A :

Abingdon tortoise in Galapagos islands became extinct within a decade after goats were introduced.

Reason R :

Goats were more efficient at browsing than Abingdon tortoise. In the light of the above statements, choose the

most appropriate

answer from the options given below:

(1)

Both

A

and

R

are correct and

R

is the correct explanation of

A

(2)

Both

A

and

R

are correct but

R

is not the correct explanation of

A

(3)

A

is correct but

R

is not correct

(4)

A

is not correct but

R

is correct

Q173Single correctHuman Reproduction

The covering of ovum at ovulation is ______.

(1)

endometrium

(2)

zona radiata

(3)

zona pellucida

(4)

chorion

Q174Single correctOrganisms and Populations

Choose the

correct

answer from the options given below:

List-I	List-II
A.. Both species are harmed	I.. Predation
B.. One species is harmed and the other is benefited	II.. Mutualism
C.. Both species are benefited	III.. Competition
D.. One is benefited while the other has no effect	IV.. Commensalism

(1)

A-III, B-IV, C-II, D-I

(2)

A-I, B-II, C-III, D-IV

(3)

A-II, B-I, C-IV, D-III

(4)

A-III, B-I, C-II, D-IV

Q175Single correctPrinciples of Inheritance and Variation

Given below are two statements : one is labelled as

Assertion A

and the other is labelled as

Reason R

Assertion A :

In an experiment, Mendel observed that the F1 progeny plants are all tall and none are dwarf.

Reason R :

Stem height is a contrasting trait, with tall being dominant and dwarf being recessive. In the light of the above statements, choose the

most appropriate

answer from the options given below :

(1)

Both

A

and

R

are correct and

R

is the correct explanation of

A

(2)

Both

A

and

R

are correct but

R

is not the correct explanation of

A

(3)

A

is correct but

R

is not correct

(4)

A

is not correct but

R

is correct

Q176Single correctBiotechnology: Principles and Processes

Given below are two statements : one is labelled as

Assertion A

and the other is labelled as

Reason R

Assertion A :

In recombinant DNA technology, lysozyme is used for disrupting bacterial cells while cellulase is for plant cells.

Reason R :

Isolation of genetic material needs disruption of cells. In the light of the above statements, choose the

most appropriate

answer from the options given below :

(1)

Both

A

and

R

are correct and

R

is the correct explanation of

A

(2)

Both

A

and

R

are correct but

R

is not the correct explanation of

A

(3)

A

is correct but

R

is not correct

(4)

A

is not correct but

R

is correct

Q177Single correctHuman Health and Disease

Which of the following is used as an effective sedative and painkiller for treating post-surgery patients?

(1)

Interferon

(2)

Antibiotics

(3)

Morphine

(4)

Anti-retroviral drugs

Q178Single correctEcosystem

Which of the following statements are

Correct

? (a) Energy flow from producers to consumers is unidirectional (b) Energy pyramid can never be inverted (c) Transfer of energy follows the 1% law Choose the

correct

answer from the options given below :

(1)

(a), (b) and (c)

(2)

(a) and (b) only

(3)

(a) and (c) only

(4)

(b) and (c) only

Q179Single correctHuman Health and Disease

Which of the following statements is

correct

about

Plasmodium

(1)

Reproduces sexually in liver cells

(2)

Reproduces sexually in RBCs

(3)

Gametocytes develop in mosquito gut

(4)

Fertilization takes place in mosquito gut

Q180Single correctBiotechnology: Principles and Processes

Choose the

correct

answer from the options given below:

List-I	List-II
A.. Transformation	I.. Restriction enzyme
B.. Cloning site	II.. Transfer DNA to host bacteria
C.. Selection	III.. Replication
D.. Ori	IV.. Antibiotic

(1)

A-II, B-I, C-IV, D-III

(2)

A-I, B-II, C-IV, D-III

(3)

A-III, B-IV, C-II, D-I

(4)

A-IV, B-I, C-III, D-II

More NEET 2026 papers

NEET 2026 — May 03

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