Q1
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
A photon and an electron, each of 20 eV energy, move in free space. The ratio of linear momentum of electron Pe to that of photon Pph is: (Take speed of light = 3x10^8 ms^-1, charge of electron = -1.6 x 10^-19 C and mass of electron = 9 x 10^-31 kg)
- A. 275
- B. 2/450
- C. 1/250
- D. 225
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Q2
PHYSICS
Unit 7: Properties of Solids and Liquids
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^3s^-1, is: (Take density of water = 1000 kg m^-3)
↻ Repeated question — also appeared in
2026 (2 sets)
- A. 400
- B. 100
- C. 200
- D. 300
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Q3
PHYSICS
Unit 5: Rotational Motion
A thin horizontal disc is rotating about a vertical axis passing through its fixed centre O. Its angular momentum is LA and LB computed about points A and B, respectively, with OB = 2 x OA. The value of LA/LB is:
↻ Repeated question — also appeared in
2026 (2 sets)
- A. 2
- B. 1/4
- C. 1/2
- D. 1
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Q4
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
Consider a long solenoid of length l and radius r. If n is the number of turns per unit length and μ0 is the permeability of free space, the inductance of the solenoid is:
↻ Repeated question — also appeared in
2026 (2 sets)
- A. 2μ0πn^2r^2l
- B. μ0πn^2r^2l
- C. μ0n^2r^2l
- D. (μ0/2π)n^2r^2l
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Q5
PHYSICS
Unit 8: Thermodynamics
The temperature of a metallic sphere of radius R is increased by a small amount ΔT. If the linear coefficient of thermal expansion of the metal is α, the approximate increase in the volume of the sphere is:
↻ Repeated question — also appeared in
2026 (1 set)
- A. 6πR^3αΔT
- B. 2πR^3αΔT
- C. 3πR^3αΔT
- D. 4πR^3αΔT
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Q13
PHYSICS
Unit 11: Electrostatics
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 UP and UT, respectively, then the ratio UP/UT is:
↻ Repeated question — also appeared in
2026 (2 sets)
- A. 1/6
- B. 2/3
- C. 1/3
- D. 1/2
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Q14
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
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 = A0(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 :
↻ Repeated question — also appeared in
2026 (1 set)
-
A.
(1)
-
B.
(2)
-
C.
(3)
-
D.
(4)
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Q15
PHYSICS
Unit 8: Thermodynamics
In an adiabatic expansion, the temperature of one mole of an ideal monatomic gas (γ = 5/3) decreases from 60K to 50K. The work done by the gas in the process is: (Take the universal gas constant as R = 8.3 J mol^-1 K^-1)
↻ Repeated question — also appeared in
2026 (3 sets)
- A. 166 J
- B. 41.5 J
- C. 83 J
- D. 124.5 J
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Q16
PHYSICS
Unit 2: Kinematics
Consider a particle moving along a straight line, whose position as a function of time is given by s(t) = at^2 - βt + γ, where a = 1 ms^-2, β = 6 ms^-1 and γ = 5 m. The average speed of the particle, in ms^-1, from t = 0 to t = 6 s is :
↻ Repeated question — also appeared in
2026 (2 sets)
- B. 12
- C. 6
- D. 3
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Q19
PHYSICS
Unit 11: Electrostatics
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 distances 2R and 3R respectively, from the centre of the sphere. In this process, the magnitude of the total work done on the point charge is pR^2 / nε0. The value of n is:
↻ Repeated question — also appeared in
2026 (1 set)
- A. 18
- B. 2
- C. 6
- D. 9
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Q21
PHYSICS
Unit 5: Rotational Motion
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 ms^-1 hits bob B elastically. The bob B rises h meter after the collision. Taking the acceleration due to gravity g = 10 ms^-2 and neglecting the size of the bob, the value of h is:
- A. 2.5
- B. 8
- C. 7
- D. 5
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Q22
PHYSICS
Unit 15: Electromagnetic Waves
An electromagnetic wave travelling in a lossless dielectric medium having a dielectric constant, εr = 9, has the electric field, Ex = E0 sin(kz - 2π x 10^6t) Vm^-1 where E0 is the amplitude and k is the wave vector. Among the following options, the incorrect choice is:
↻ Repeated question — also appeared in
2026 (3 sets)
- A. The direction of propagation of the electromagnetic wave is along +z
- B. The speed of the electromagnetic wave inside the medium is 10^8 ms^-1
- C. The wavelength of the electromagnetic wave inside the medium is 300 m
- D. The magnetic field is given by the relation By = (B0/v) sin(kz - 2π x 10^6 t) where v is the speed of the electromagnetic wave inside the medium
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Q23
PHYSICS
Unit 4: Work Energy and Power
A particle of mass M moves along a horizontal x axis from x = 0 to x = L. The coefficient of kinetic friction varies as a function of x as μk(x) = μ0 - αx, where μ0, α are constants of appropriate dimensions, so that μk(L) = 0. The total work done by the frictional force during the motion is nμ0MgL, where g is the acceleration due to gravity. The value of n is:
↻ Repeated question — also appeared in
2026 (2 sets)
- A. 1/2
- B. 3
- C. 1
- D. 1/3
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Q23
PHYSICS
Unit 3: Laws of Motion
A particle of mass M moves along a horizontal x axis from x=0 to x=L. The coefficient of kinetic friction varies as a function of x as μk(x) = μ0 - ax, where μ0, a are constants of appropriate dimensions, so that μk(L) = 0. The total work done by the frictional force during the motion is nμ0MgL, where g is the acceleration due to gravity. The value of n is:
- A. 1/2
- B. 3
- C. 1
- D. 1/3
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Q24
PHYSICS
Unit 16: Optics
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 center of medium Q. If viewed from medium P near the normal direction, the apparent depth of O is h1. For similar observation from medium R, the apparent depth is h2. The value of |h1 - h2|, in cm, is:
↻ Repeated question — also appeared in
2026 (2 sets)
- A. 3
- C. 1
- D. 2
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Q25
PHYSICS
Unit 6: Gravitation
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 3R from the centre of the charged sphere. When the point charge reaches the surface of the sphere, its speed is:
- A. √(3Qq / (4πε0mR))
- B. √(2Qq / (3πε0mR))
- C. √(Qq / (3πε0mR))
- D. None of the above
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Q26
PHYSICS
Unit 3: Laws of Motion
A car travels on a circular racetrack of radius 50 m, which is banked at an angle θ. If the car travels at a speed 10 ms^-1, then the wear and tear on its tyres is minimum. Taking the acceleration due to gravity to be 10 ms^-2, the value of θ is:
↻ Repeated question — also appeared in
2026 (1 set)
- A. tan^-1(2√3)
- B. tan^-1(1/5)
- C. tan^-1(2/5)
- D. tan^-1(√3/2)
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Q27
PHYSICS
Unit 2: Kinematics
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 = π/2) with identical uniform angular speeds in opposite directions, and meet again at point B (θ = -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?
↻ Repeated question — also appeared in
2026 (1 set)
-
A.
Figure 1
-
B.
Figure 2
-
C.
Figure 3
-
D.
Figure 4
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Q28
PHYSICS
Unit 19: Electronic Devices
Three identical p-n junction diodes D1, D2 and D3 are connected across a battery as shown in the figure. If the width of the depletion regions of D1, D2 and D3 are W1, W2 and W3, respectively, then the correct option is:
↻ Repeated question — also appeared in
2026 (2 sets)
- A. W2 > W1 = W3
- B. W1 > W2 > W3
- C. W3 = W1 > W2
- D. W3 > W2 > W1
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Q29
PHYSICS
Unit 16: Optics
The lens combination as shown in the figure, consists of two lenses, L1 and L2, of the focal lengths +10 cm and -10 cm, respectively. The position of the image formed is:
↻ Repeated question — also appeared in
2026 (3 sets)
- A. 60 cm to the right of the concave lens
- B. 20 cm to the left of the concave lens
- C. 60 cm to the left of the concave lens
- D. 30 cm to the right of the concave lens
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Q30
PHYSICS
Unit 5: 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 IA and that calculated about a vertical axis passing through the centre of B is IB. The difference IA - IB is
↻ Repeated question — also appeared in
2026 (2 sets)
- B. (M-m)(R+r)^2
- C. (m-M)(R+r)^2
- D. (m-M)(R-r)^2
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Q31
PHYSICS
Unit 18: Atoms and Nuclei
Consider that an electron is revolving in an excited state of Hydrogen atom with velocity √25.6 x 10^5 ms^-1. The radius of the orbit is x x 10^-9 m. The value of x is:
- A. 1
- B. 4
- C. 3
- D. 2
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Q32
PHYSICS
Unit 9: Kinetic 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 nA and nB, respectively, then the correct option is:
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2026 (3 sets)
- A. nA = 1/2 nB
- B. nA = nB
- C. nA = 2nB
- D. nA = 1/4 nB
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Q33
PHYSICS
Unit 7: Properties of Solids and Liquids
A cylindrical cork of uniform density floats in a liquid of density p1. 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 p2, then the similar oscillation has time period 2T. The value of p2/ p1 is:
↻ Repeated question — also appeared in
2026 (1 set)
- A. 1/4
- B. 4
- C. 2
- D. 1/2
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Q33
PHYSICS
Unit 10: Oscillations and Waves
A cylindrical cork of uniform density floats in a liquid of density ρ1. 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 ρ2, then the similar oscillation has time period 2T. The value of ρ2/ρ1 is:
↻ Repeated question — also appeared in
2026 (2 sets)
- A. 1/4
- B. 4
- C. 2
- D. 1/2
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Q34
PHYSICS
Unit 10: Oscillations and Waves
For sound waves, if the number of nodes for the 5th harmonic of an open-ended pipe is n and that for the 9th harmonic of the same pipe with one of its ends closed is m, the ratio n/m is:
↻ Repeated question — also appeared in
2026 (2 sets)
- A. 3/5
- B. 5/9
- C. 9/5
- D. 1
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Q35
PHYSICS
Unit 18: Atoms and Nuclei
Consider the following nuclear reaction : 238U -> 234Th + 4He. Take masses of 238U, 234Th and 4He 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]
↻ Repeated question — also appeared in
2026 (3 sets)
- A. 3740
- B. 3726
- C. 3730
- D. 3736
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Q36
PHYSICS
Unit 20: Experimental Skills
Which of the following measurements require 'index correction'?
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2026 (1 set)
- A. Measurement of speed of sound using resonance tube
- B. Measurement of resistance of a wire using meter bridge
- C. Measurement of gravitational acceleration using simple pendulum
- D. Measurement of focal length of lenses using optical bench
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Q37
PHYSICS
Unit 6: Gravitation
In a solar system, the time-period of revolution of a planet tracing a circular orbit of radius R is proportional to:
↻ Repeated question — also appeared in
2026 (2 sets)
- A. R^3
- B. R^(1/2)
- C. R^(3/2)
- D. R^2
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Q38
PHYSICS
Unit 1: Physics and Measurement
Consider that σ, kB, b represent Stefan-Boltzmann constant, Boltzmann constant and Wien's displacement law constant, respectively. The dimension of σkB^-1 b^4 is:
- A. [L^-1 T^-1 K^-4]
- B. [L^-1 T^-1 K^-2]
- C. [L^-1 K^-2]
- D. [L^-1 T^-1 K^-3]
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Q39
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
A ray of light with wavelength λ is incident on three different photoelectric cells namely 1, 2 and 3. The threshold wavelengths of these photoelectric cells are λ1, λ2, and λ3, respectively and the magnitude of stopping potentials of these cells are V1, V2 and V3, respectively. The relation between λ and threshold wavelengths are λ1 < λ, λ2 > λ and λ3 >> λ. The correct option is:
↻ Repeated question — also appeared in
2026 (1 set)
- A. V1 < V2, V3 = 0
- B. V1 = 0, V2 < V3
- C. V1 = 0, V2 > V3
- D. V1 > V2, V3 = 0
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Q40
PHYSICS
Unit 20: Experimental Skills
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 4th Vernier division coincides with a division of the main scale. If this Vernier calliper measures the length of a wire to be 1 cm, the actual length of the wire is:
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2026 (1 set)
- A. 1.04 cm
- B. 0.60 cm
- C. 0.96 cm
- D. 1.00 cm
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Q43
PHYSICS
Unit 8: Thermodynamics
One mole of an ideal monatomic gas undergoes a cyclic process as shown in the figure. The total heat supplied to the gas is:
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2026 (1 set)
- A. 800 J
- B. 400 J
- C. 500 J
- D. 600 J
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Q44
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
Two infinitely long parallel conducting wires A and B carry currents I and 2I, 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 μ0 is the permeability of free space.):
↻ Repeated question — also appeared in
2026 (1 set)
- A. 4μ0I^2 / (πλg)
- B. μ0I^2 / (2πλg)
- C. μ0I^2 / (πλg)
- D. 2μ0I^2 / (πλg)
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Q45
PHYSICS
Unit 10: Oscillations and Waves
Consider a spring-mass simple harmonic oscillator in one dimension. The mass of the particle is m kg and the spring constant is k Nm^-1. At a given instant, the extension of the spring is x meter and the speed of the particle is v ms^-1. On the x-v plane, if the graph of v as a function of x is a circle, then the correct option is:
↻ Repeated question — also appeared in
2026 (3 sets)
- A. k = sqrt(m)
- B. k = 1/m
- C. k = m
- D. k = m^2
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Q47
CHEMISTRY
Unit 12: Coordination Compounds
The formula of tetraammineaquachloridocobalt(III) chloride is
↻ Repeated question — also appeared in
2026 (1 set)
- A. [Co(NH3)4(H2O)Cl]Cl2
- B. [Co(NH3)4Cl2] x H2O
- C. [Co(NH3)4]Cl3 x H2O
- D. [Co(NH3)4(H2O)Cl]Cl
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Q48
CHEMISTRY
Unit 11: 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)
↻ Repeated question — also appeared in
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- A. Ho3+
- B. Nd3+
- C. Ce3+
- D. Tb3+
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Q49
CHEMISTRY
Unit 8: Chemical Kinetics
For an elementary chemical reaction, the Arrhenius plot is given below. If the energy of activation is 6.64 kJ mol-1 and R = 8.3 J K-1 mol-1, the temperature at which the rate constant becomes e^2 min-1 is
↻ Repeated question — also appeared in
2026 (1 set)
- A. 250 K
- B. 125 K
- C. 150 K
- D. 200 K
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Q50
CHEMISTRY
Unit 11: d- and f-Block Elements
The green paramagnetic species formed by heating KMnO4 at 513 K is
↻ Repeated question — also appeared in
2026 (2 sets)
- A. KO2
- B. K2MnO4
- C. Mn3O4
- D. MnO
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Q56
CHEMISTRY
Unit 19: Biomolecules
The correct statement about peptides and proteins is
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2026 (2 sets)
- A. In α-helices, the polypeptide chain is twisted into a left-handed screw (helix) through intramolecular hydrogen bonds.
- B. Tertiary structure of proteins has two or more polypeptide subunits.
- C. Only the proteins having a quaternary structure are biologically active.
- D. In β-pleated sheet structures, peptide chains are held together by intermolecular hydrogen bonds.
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Q57
CHEMISTRY
Unit 18: Organic Compounds Containing Nitrogen
Given below are two statements: Statement-I: Oxidation of p-nitrotoluene with acidic KMnO4 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.
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2026 (1 set)
- A. Statement-I is incorrect but Statement-II is correct.
- B. Both Statement-I and Statement-II are correct.
- C. Both Statement-I and Statement-II are incorrect.
- D. Statement-I is correct but Statement-II is incorrect.
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Q58
CHEMISTRY
Unit 18: Organic Compounds Containing Nitrogen
Identify the reactions which give aniline as the major product.
- A. C and D only
- B. A and B only
- C. B and D only
- D. A and C only
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Q59
CHEMISTRY
Unit 4: Chemical Thermodynamics
Two moles of an ideal gas undergo free expansion from 10 L to 100 L at 300 K. The values of ΔSsystem and ΔSsurroundings are (R is universal gas constant)
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2026 (2 sets)
- A. ΔSsystem = 4.606 R; ΔSsurroundings = 0
- B. ΔSsystem = 0; ΔSsurroundings = 0
- C. ΔSsystem = 4.606 R; ΔSsurroundings = -4.606 R
- D. ΔSsystem = 0; ΔSsurroundings = 4.606 R
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Q61
CHEMISTRY
Unit 12: Coordination Compounds
The complex which has facial and meridional isomers is (Given : py = pyridine and en = H2N-CH2-CH2-NH2)
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2026 (1 set)
- A. [Ni(en)2(H2O)2]2+
- B. [Cr(py)3(Cl)3]
- C. [Cr(H2O)6]3+
- D. [Co(NH3)4(H2O)2]3+
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Q62
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
The numbers 17.0145 and 21.0235 were rounded to three figures after the decimal point. The resulting numbers, respectively, are
- A. 17.015 and 21.024
- B. 17.014 and 21.023
- C. 17.015 and 21.023
- D. 17.014 and 21.024
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Q63
CHEMISTRY
Unit 1: Some Basic Concepts in 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)
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2026 (2 sets)
- A. 362 g
- B. 352 g
- C. 322 g
- D. 176 g
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Q64
CHEMISTRY
Unit 2: Atomic Structure
Consider the following schematic plots of orbital wavefunction (ψr) against distance (r) from the nucleus. The figure representing two radial nodes in the orbital is
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2026 (2 sets)
- A. D
- B. A
- C. B
- D. C
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Q65
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
The following carbocation is stabilized by the interaction of the empty p orbital with
- A. empty σ* and empty π* orbitals
- B. filled σ and filled π orbitals
- C. empty σ and empty π* orbitals
- D. empty σ* and filled π orbitals
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Q76
CHEMISTRY
Unit 15: Hydrocarbons
Among the following, the compound having conjugated double bonds is
↻ Repeated question — also appeared in
2026 (3 sets)
- A. hepta-1,6-diene
- B. hepta-1,3-diene
- C. hepta-1,4-diene
- D. hepta-1,5-diene
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Q77
CHEMISTRY
Unit 8: Chemical Kinetics
2A -> 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
↻ Repeated question — also appeared in
2026 (2 sets)
- A. 2.0 min
- B. 1.5 min
- C. 0.75 min
- D. 1.0 min
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Q78
CHEMISTRY
Unit 6: Equilibrium
The correct order of solubility of the given salts in water at 298 K is
Salt Ksp at 298 K
AgBr 5.0 x 10^-13
Zn(OH)2 1.0 x 10^-15
Hg2Cl2 1.3 x 10^-18
↻ Repeated question — also appeared in
2026 (1 set)
- A. Zn(OH)2 > AgBr > Hg2Cl2
- B. Hg2Cl2 > Zn(OH)2 > AgBr
- C. AgBr > Zn(OH)2 > Hg2Cl2
- D. Hg2Cl2 > AgBr > Zn(OH)2
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Q81
CHEMISTRY
Unit 5: Solutions
Assertion A: For an ideal solution formed by mixing liquids P and Q, Δmix H = 0 and Δmix V = 0.
Reason R: No interactions occur between P and Q.
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2026 (3 sets)
- A. A is not correct but R is correct
- B. Both A and R are correct and R is the correct explanation of A
- C. Both A and R are correct but R is NOT the correct explanation of A
- D. A is correct but R is not correct
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Q83
CHEMISTRY
Unit 4: Chemical Thermodynamics
A protein undergoes reversible thermal denaturation from its initial state N to denatured state D according to N ⇌ D. At 60 °C, the concentrations of both N and D are equal at equilibrium, and the standard enthalpy change of denaturation is 666 kJ mol-1. The standard entropy change (ΔS° in kJ K-1mol-1) of the protein upon denaturation at 60 °C is closest to
↻ Repeated question — also appeared in
2026 (1 set)
- A. 11.1
- B. 2.0
- C. 2000.0
- D. 333.0
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Q84
CHEMISTRY
Unit 11: d- and f-Block Elements
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Generally, 3d transition metals have high melting points. Reason R: Involvement of 3d-electrons in addition to 4s-electrons in the interatomic metallic bonding. In light of the above statements, choose the most appropriate answer from the options given below:
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2026 (1 set)
- A. A is not correct but R is correct.
- B. Both A and R are correct and R is the correct explanation of A.
- C. Both A and R are correct and R is NOT the correct explanation of A.
- D. A is correct but R is not correct.
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Q85
CHEMISTRY
Unit 9: Classification of Elements and Periodicity in Properties
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:
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2026 (2 sets)
- A. A is not correct but R is correct.
- B. Both A and R are correct and R is the correct explanation of A.
- C. Both A and R are correct and R is NOT the correct explanation of A.
- D. A is correct but R is not correct.
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Q86
CHEMISTRY
Unit 15: Hydrocarbons
Consider the following reaction sequences and choose the correct option.
- A. M and N are stereoisomers
- B. K and L are geometrical isomers
- C. K and L are enantiomers
- D. M and N are geometrical isomers
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Q87
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
The highest occupied molecular orbital for Ne2 is
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- A. σ*2p
- B. π2p
- C. σ2p
- D. π*2p
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Q88
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Match the species in List I with their geometry in List II
- A. A-III, B-II, C-I, D-IV
- B. A-IV, B-III, C-I, D-II
- C. A-III, B-IV, C-I, D-II
- D. A-III, B-I, C-II, D-IV
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Q89
CHEMISTRY
Unit 19: Biomolecules
Match the vitamins in List I with their sources in List II
- A. A-III, B-I, C-IV, D-II
- B. A-II, B-III, C-IV, D-I
- C. A-IV, B-I, C-II, D-III
- D. A-IV, B-II, C-I, D-III
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Q90
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
For the following reaction sequence, choose the correct option
- A. Both P and Q are carbonyl compounds.
- B. If P is the sodium salt of a carboxylic acid, Q is a primary alcohol.
- C. P and Q are aromatic compounds.
- D. If P gives a carboxylic acid on acidification, Q gives a poisonous gas on exposure to air and light.
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Q91
BIOLOGY
Unit 1: Diversity in Living World
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:
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2026 (2 sets)
- A. Statement I is incorrect but Statement II is correct
- B. Both Statement I and Statement II are correct
- C. Both Statement I and Statement II are incorrect
- D. Statement I is correct but Statement II is incorrect
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Q92
BIOLOGY
Unit 4: Plant Physiology
How many turns of Calvin cycle are required for the formation of three molecules of glucose?
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- A. 18
- B. 6
- C. 3
- D. 1
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Q93
BIOLOGY
Unit 4: Plant Physiology
Photorespiration reaction catalyzed by RuBisCo is shown below: RuBP + O2 → 3-Phosphoglycerate + X. Identify 'X' from the given options:
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- A. Malate
- B. Phosphoenolpyruvate
- C. 2-Phosphoglycolate
- D. Oxaloacetate
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Q93
BIOLOGY
Unit 4: Plant Physiology
Photorespiration reaction catalyzed by RuBisCo is shown below: RuBP + O2 -> 3-Phosphoglycerate + X. Identify 'X' from the given options.
↻ Repeated question — also appeared in
2026 (4 sets)
- A. Malate
- B. Phosphoenolpyruvate
- C. 2-Phosphoglycolate
- D. Oxaloacetate
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Q94
BIOLOGY
Unit 1: Diversity in Living World
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:
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2026 (2 sets)
- A. Statement I is incorrect but Statement II is correct
- B. Both Statement I and Statement II are correct
- C. Both Statement I and Statement II are incorrect
- D. Statement I is correct but Statement II is incorrect
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Q95
BIOLOGY
Unit 4: Plant Physiology
How many molecules of pyruvic acid are produced at the end of glycolysis from 206 molecules of glucose?
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- A. 412
- B. 206
- C. 309
- D. 103
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Q96
BIOLOGY
Unit 6: Reproduction
Match List-I with List-II. List-I: A. Fusion of protoplasms between gametes, B. Fusion of two nuclei, C. Generation of haploid spores. List-II: I. Meiosis, II. Plasmogamy, III. Karyogamy. Choose the correct answer from the options given below:
- A. A-I, B-III, C-II
- B. A-II, B-III, C-I
- C. A-II, B-I, C-III
- D. A-III, B-II, C-I
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Q97
BIOLOGY
Unit 3: Cell Structure and Function
Mitochondrial inner membrane encloses
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- A. aqueous humor
- B. matrix
- C. cytosol
- D. mucus
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Q98
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Phyllotaxy is the pattern of arrangement of
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- A. sepals
- B. leaves
- C. flowers
- D. fruits
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Q99
BIOLOGY
Unit 1: Diversity in Living World
Mad cow disease is caused by
↻ Repeated question — also appeared in
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- A. Mycoplasma sp.
- B. prions
- C. viroids
- D. Aspergillus sp.
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Q100
BIOLOGY
Unit 3: Cell Structure and Function
Cell theory was formulated by
↻ Repeated question — also appeared in
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- A. Antonie Von Leeuwenhoek
- B. Schleiden and Schwann
- C. Robert Brown
- D. Singer and Nicolson
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Q101
BIOLOGY
Unit 4: Plant Physiology
Which of the following plant growth regulators promotes internode elongation prior to flowering in cabbage?
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- A. Ethephon
- B. Abscisic acid
- C. Gibberellin
- D. Indole butyric acid
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Q102
BIOLOGY
Unit 4: Plant Physiology
Which pigment has absorption peak at 700 nm in the photosynthetic reaction centre PS I (P700)?
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- A. Carotenoids
- B. Chlorophyll b
- C. Chlorophyll a
- D. Xanthophylls
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Q103
BIOLOGY
Unit 1: Diversity in Living World
Sphenopsida class belongs to
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- A. pteridophytes
- B. bryophytes
- C. angiosperms
- D. gymnosperms
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Q104
BIOLOGY
Unit 5: Human Physiology
Which of the following represents the correct sequence of arrangement of bones in the lower limb of humans?
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2026 (2 sets)
- A. Femur-tarsal-patella-tibia
- B. Femur-tibia-patella-tarsal
- C. Patella-femur-tibia-tarsal
- D. Femur-patella-tibia-tarsal
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Q105
BIOLOGY
Unit 4: Plant Physiology
Which of the following plant growth regulators is used as herbicide?
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- A. Gibberellin
- B. 2,4-D
- C. Kinetin
- D. Abscisic acid
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Q106
BIOLOGY
Unit 1: Diversity in Living World
Genus represents
- A. a group of closely related families
- B. an individual plant or animal
- C. a population of plants and animals
- D. a group of closely related species
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Q107
BIOLOGY
Unit 3: Cell Structure and Function
The plastid that stores xanthophyll is known as
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- A. amyloplast
- B. chloroplast
- C. chromoplast
- D. aleuroplast
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Q108
BIOLOGY
Unit 5: Human Physiology
In water, frogs respire using
- A. trachea
- B. skin
- C. buccal cavity
- D. lungs
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Q109
BIOLOGY
Unit 1: Diversity in Living World
Which of the following is not a characteristic of chordates?
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- A. Presence of post anal part (tail)
- B. Presence of notochord
- C. Central nervous system is dorsal
- D. Absence of gills
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Q110
BIOLOGY
Unit 3: Cell Structure and Function
Smooth endoplasmic reticulum
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- A. is a site for the synthesis of carbohydrates
- B. has ribosomes attached to its surface
- C. is the major site for the synthesis of lipids
- D. is actively involved in protein synthesis
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Q111
BIOLOGY
Unit 3: Cell Structure and Function
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:
↻ Repeated question — also appeared in
2026 (1 set)
- A. (a), (b) and (c) only
- B. (b) and (c) only
- C. (a) and (c) only
- D. (a), (c) and (d) only
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Q112
BIOLOGY
Unit 3: Cell Structure and Function
Match List-I with List-II. List-I: A. Cristae, B. Cisternae, C. Thylakoids, D. Phospholipid. List-II: I. Flat membrane sacs in stroma of chloroplast, II. Infoldings in mitochondria, III. Cell membrane, IV. Disc shaped sacs in the Golgi apparatus. Choose the correct answer from the options given below:
- A. A-IV, B-III, C-I, D-II
- B. A-III, B-IV, C-I, D-II
- C. A-II, B-IV, C-I, D-III
- D. A-II, B-IV, C-III, D-I
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Q113
BIOLOGY
Unit 5: Human Physiology
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:
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2026 (4 sets)
- A. (b) and (c) only
- B. (a) and (b) only
- C. (a), (b) and (c) only
- D. (c) and (d) only
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Q113
BIOLOGY
Unit 5: Human Physiology
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
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2026 (4 sets)
- A. (b) and (c) only
- B. (a) and (b) only
- C. (a), (b) and (c) only
- D. (c) and (d) only
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Q114
BIOLOGY
Unit 4: Plant Physiology
Which of the following statements regarding photorespiration are correct? (a) Do not occur in C3 plants (b) CO2 is consumed and O2 is generated (c) Phosphoglycolate is formed (d) No synthesis of ATP and NADPH. Choose the correct answer from the options given below:
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2026 (3 sets)
- A. (a) and (b) only
- B. (a) and (d) only
- C. (c) and (d) only
- D. (b) and
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Q114
BIOLOGY
Unit 4: Plant Physiology
Which of the following statements regarding photorespiration are correct?
(a) Do not occur in C3 plants
(b) CO2 is consumed and O2 is generated
(c) Phosphoglycolate is formed
(d) No synthesis of ATP and NADPH
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2026 (3 sets)
- A. (a) and (b) only
- B. (a) and (d) only
- C. (c) and (d) only
- D. (b) and (d) only
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Q115
BIOLOGY
Unit 5: Human Physiology
Which of the following statements is incorrect?
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- A. Fibrinogen is produced from fibrin
- B. Blood coagulates in response to an injury
- C. Blood clot consists of fibrins
- D. Fibrin is produced from fibrinogen
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Q116
BIOLOGY
Unit 1: Diversity in Living World
Arrange the following taxonomic categories in ascending order.
(a) Genus (b) Class (c) Order (d) Phylum (e) Family (f) Kingdom (g) Species
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2026 (1 set)
- A. (f), (c), (b), (g), (d), (e), (a)
- B. (g), (a), (e), (c), (b), (d), (f)
- C. (a), (c), (d), (g), (f), (b), (e)
- D. (g), (c), (d), (b), (e), (a), (f)
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Q120
BIOLOGY
Unit 3: Cell Structure and Function
Endomembrane system includes
↻ Repeated question — also appeared in
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- A. Golgi complex, chloroplast, peroxisomes and vacuole
- B. endoplasmic reticulum, Golgi complex, lysosomes and vacuole
- C. endoplasmic reticulum, chloroplast, peroxisomes and vacuole
- D. mitochondria, chloroplast, peroxisomes and vacuole
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Q121
BIOLOGY
Unit 4: Plant Physiology
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 7th day?
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2026 (3 sets)
- A. 460 cm
- B. 50 cm
- C. 170 cm
- D. 230 cm
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Q125
BIOLOGY
Unit 5: Human Physiology
Which of the following is not a part of human central neural system?
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- A. Pericardium
- B. Arachnoid
- C. Dura mater
- D. Pia mater
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Q126
BIOLOGY
Unit 3: Cell Structure and Function
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:
- A. Statement I is incorrect, but Statement II is true
- B. Both Statement I and Statement II are true
- C. Both Statement I and Statement II are false
- D. Statement I is correct, but Statement II is false
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Q128
BIOLOGY
Unit 1: Diversity in Living World
Symbiotic association between fungi and algae are called ____
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- A. chrysophytes
- B. lichens
- C. sponges
- D. mycorrhiza
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Q129
BIOLOGY
Unit 1: Diversity in Living World
Which of the following is not a prokaryote?
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- A. Fungi
- B. Bacteria
- C. Blue green algae
- D. Mycoplasma
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Q133
BIOLOGY
Unit 1: Diversity in Living World
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:
↻ Repeated question — also appeared in
2026 (1 set)
- A. Statement I is incorrect but Statement II is correct
- B. Both Statement I and Statement II are correct
- C. Both Statement I and Statement II are incorrect
- D. Statement I is correct but Statement II is incorrect
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Q134
BIOLOGY
Unit 3: Cell Structure and Function
The correct sequence of adult cell cycle phases is ____
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- A. S-M-G2-G1
- B. G1-G2-S-M
- C. G1-M-G2-S
- D. G1-S-G2-M
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Q135
BIOLOGY
Unit 5: Human Physiology
In frogs, the number of pairs of cranial nerves arising from the brain are
↻ Repeated question — also appeared in
2026 (2 sets)
- A. 12
- B. 6
- C. 9
- D. 10
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Q136
BIOLOGY
Unit 9: Biotechnology and Its Applications
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:
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2026 (1 set)
- A. A is not correct but R is correct
- B. Both A and R are correct and R is the correct explanation of A
- C. Both A and R are correct but R is not the correct explanation of A
- D. A is correct but R is not correct
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Q137
BIOLOGY
Unit 6: Reproduction
The method of directly injecting a sperm in to ovum in assisted reproductive technology is called
↻ Repeated question — also appeared in
2026 (4 sets)
- A. Embryo transfer (ET)
- B. Gamete intra fallopian transfer (GIFT)
- C. Zygote intra fallopian transfer (ZIFT)
- D. Intra cytoplasmic sperm injection (ICSI)
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Q137
BIOLOGY
Unit 6: Reproduction
The method of directly injecting a sperm into ovum in assisted reproductive technology is called
↻ Repeated question — also appeared in
2026 (4 sets)
- A. Embryo transfer (ET)
- B. Gamete intra fallopian transfer (GIFT)
- C. Zygote intra fallopian transfer (ZIFT)
- D. Intra cytoplasmic sperm injection (ICSI)
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Q138
BIOLOGY
Unit 7: Genetics and Evolution
Adaptive radiation in placental mammals and Australian Marsupials leading to similarity between distant species is an example of ____
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- A. genetic drift
- B. divergent evolution
- C. convergent evolution
- D. founder effect
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Q138
BIOLOGY
Unit 7: Genetics and Evolution
Adaptive radiation in placental mammals and Australian Marsupials leading to similarity between distant species is an example of _____
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2026 (4 sets)
- A. genetic drift
- B. divergent evolution
- C. convergent evolution
- D. founder effect
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Q139
BIOLOGY
Unit 7: Genetics and Evolution
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:
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2026 (2 sets)
- A. A is not correct but R is correct
- B. Both A and R are correct and R is the correct explanation of A
- C. Both A and R are correct but R is not the correct explanation of A
- D. A is correct but R is not correct
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Q140
BIOLOGY
Unit 10: Ecology and Environment
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:
↻ Repeated question — also appeared in
2026 (1 set)
- A. (b) > (a) > (d) > (c) > (e)
- B. (c) > (b) > (d) > (e) > (a)
- C. (d) > (a) > (c) > (b) > (e)
- D. (e) > (b) > (a) > (c) > (d)
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Q141
BIOLOGY
Unit 5: Human Physiology
Sponges exchange O2 with CO2 by
↻ Repeated question — also appeared in
2026 (2 sets)
- A. gills
- B. simple diffusion over their entire body surfaces
- C. moist cuticle
- D. tracheal tubes
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Q142
BIOLOGY
Unit 7: Genetics and Evolution
For a person with blood group 'O', which of the following is not a possible combination of parents' blood group genotypes?
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2026 (3 sets)
- A. Father : IA IB and Mother : IAi
- B. Father : IAi and Mother : IBi
- C. Father : IAi and Mother : IAi
- D. Father : IBi and Mother : IBi
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Q143
BIOLOGY
Unit 7: Genetics and Evolution
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:
↻ Repeated question — also appeared in
2026 (3 sets)
- A. Statement I is incorrect but Statement II is correct
- B. Both Statement I and Statement II are correct
- C. Both Statement I and Statement II are incorrect
- D. Statement I is correct but Statement II is incorrect
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Q144
BIOLOGY
Unit 8: Biology and Human Welfare
Which of the following is used as an effective sedative and painkiller for treating post-surgery patients?
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- A. Anti-retroviral drugs
- B. Interferon
- C. Antibiotics
- D. Morphine
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Q145
BIOLOGY
Unit 6: Reproduction
Which of the following plant produces non-albuminous seeds?
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- A. Pea
- B. Wheat
- C. Maize
- D. Barley
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Q146
BIOLOGY
Unit 10: Ecology and Environment
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:
↻ Repeated question — also appeared in
2026 (2 sets)
- A. A is not correct but R is correct
- B. Both A and R are correct and R is the correct explanation of A
- C. Both A and R are correct but R is not the correct explanation of A
- D. A is correct but R is not correct
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Q147
BIOLOGY
Unit 6: Reproduction
The covering of ovum at ovulation is
↻ Repeated question — also appeared in
2026 (2 sets)
- A. chorion
- B. endometrium
- C. zona radiata
- D. zona pellucida
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Q148
BIOLOGY
Unit 8: Biology and Human Welfare
Which of the following is used as a clot buster?
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2026 (3 sets)
- A. Statins
- B. Streptokinase
- C. Penicillin
- D. Cyclosporin A
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Q149
BIOLOGY
Unit 6: Reproduction
Which of the following structure is not a part of the male reproductive system?
↻ Repeated question — also appeared in
2026 (3 sets)
- A. Infundibulum
- B. Rete testis
- C. Epididymis
- D. Vasa efferentia
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Q149
BIOLOGY
Unit 5: Human Physiology
Which of the following structure is not a part of the male reproductive system?
↻ Repeated question — also appeared in
2026 (1 set)
- A. Infundibulum
- B. Rete testis
- C. Epididymis
- D. Vasa efferentia
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Q150
BIOLOGY
Unit 6: 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:
↻ Repeated question — also appeared in
2026 (2 sets)
- A. Statement I is incorrect but Statement II is correct
- B. Both Statement I and Statement II are correct
- C. Both Statement I and Statement II are incorrect
- D. Statement I is correct but Statement II is incorrect
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Q150
BIOLOGY
Unit 5: Human Physiology
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:
- A. Statement I is incorrect but Statement II is correct
- B. Both Statement I and Statement II are correct
- C. Both Statement I and Statement II are incorrect
- D. Statement I is correct but Statement II is incorrect
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Q151
BIOLOGY
Unit 5: Human Physiology
The opening between the right atrium and the right ventricle is guarded by
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2026 (4 sets)
- A. sino-atrial node
- B. bicuspid valve
- C. tricuspid valve
- D. semilunar valve
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Q151
BIOLOGY
Unit 5: Human Physiology
The opening between the right atrium and the right ventricle is guarded by
↻ Repeated question — also appeared in
2026 (4 sets)
- A. sino-atrial node
- B. bicuspid valve
- C. tricuspid valve
- D. semilunar valve
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Q152
BIOLOGY
Unit 7: Genetics and Evolution
Which of the following is not evidence for evolution?
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2026 (3 sets)
- A. Divergent evolution of anatomical structures such as forelimbs
- B. Convergent evolution of traits like wings of birds and butterflies
- C. Paleontological evidence from fossil records
- D. Embryological support for evolution as proposed by Ernst Heckel
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Q153
BIOLOGY
Unit 9: Biotechnology and Its Applications
The inactive form of Bt toxin is converted to the active form in the insect gut ____.
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2026 (3 sets)
- A. by nucleases
- B. due to alkaline pH
- C. due to acidic pH
- D. by proteases
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Q154
BIOLOGY
Unit 8: Biology and Human Welfare
Colostrum, secreted by mother during initial days of lactation, is abundant in
- A. IgD
- B. IgG
- C. IgM
- D. IgA
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Q155
BIOLOGY
Unit 4: Plant Physiology
Which of the following in female gametophyte of an angiosperm helps in guiding the pollen tube for fertilizing the eggs?
- A. Polar nucleus
- B. Antipodals
- C. Synergids
- D. Central cells
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Q156
BIOLOGY
Unit 5: Human Physiology
Which of the following disease is not sexually transmitted?
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2026 (2 sets)
- A. Genital warts
- B. Syphilis
- C. Tuberculosis
- D. Gonorrhoea
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Q157
BIOLOGY
Unit 7: Genetics and Evolution
Which of the following statements about lac-operon is correct?
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2026 (2 sets)
- A. Galactose can act as an inducer of lac operon
- B. Gene i is constitutively expressed
- C. Lactose activates repressor to bind to the operator
- D. Genes i, z, y and a share single common promoter
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Q158
BIOLOGY
Unit 9: Biotechnology and Its Applications
Match List-I with List-II.
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
Choose the correct answer from the options given below:
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2026 (1 set)
- A. A-IV, B-I, C-III, D-11
- B. A-II, B-I, C-IV, D-III
- C. A-I, B-11, C-IV, D-III
- D. A-III, B-IV, C-11, D-I
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Q159
BIOLOGY
Unit 7: Genetics and Evolution
A population of diploid organisms is at Hardy-Weinberg equilibrium. If the frequency of allele A is 0.1, the frequency of AA is ____.
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2026 (3 sets)
- A. 0.99
- B. 0.01
- C. 0.02
- D. 0.10
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Q160
BIOLOGY
Unit 5: Human Physiology
Sperm motility is due to ____.
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- A. muscular movement
- B. flagellar movement
- C. ciliary movement
- D. amoeboid movement
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Q161
BIOLOGY
Unit 10: Ecology and Environment
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 ____.
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2026 (1 set)
- A. 100 million
- B. 1 million
- C. 5 million
- D. 10 million
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Q162
BIOLOGY
Unit 7: Genetics and Evolution
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:
↻ Repeated question — also appeared in
2026 (1 set)
- A. A is false but R is true
- B. Both A and R are correct and R is the correct explanation of A
- C. Both A and R are true, but R is not the correct explanation of A
- D. A is true but R is false
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Q163
BIOLOGY
Unit 5: Human Physiology
Muscle contraction is initiated by a signal sent by the central nervous system by the release of ____.
↻ Repeated question — also appeared in
2026 (2 sets)
- A. cyclic adenine monophosphate
- B. acetyl choline
- C. acetyl coenzyme A
- D. cyclic guanine monophosphate
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Q164
BIOLOGY
Unit 5: Human Physiology
Which of the following hormone is not secreted by human placenta?
↻ Repeated question — also appeared in
2026 (1 set)
- A. LH
- B. hCG
- C. Estrogen
- D. Progesterone
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Q164
BIOLOGY
Unit 6: Reproduction
Which of the following hormone is not secreted by human placenta?
↻ Repeated question — also appeared in
2026 (3 sets)
- A. LH
- B. hCG
- C. Estrogen
- D. Progesterone
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Q165
BIOLOGY
Unit 8: Biology and Human Welfare
Which of the following statements is correct about Plasmodium?
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2026 (4 sets)
- A. Fertilization takes place in mosquito gut
- B. Reproduces sexually in liver cells
- C. Reproduces sexually in RBCs
- D. Gametocytes develop in mosquito gut
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Q165
BIOLOGY
Unit 8: Biology and Human Welfare
Which of the following statements is correct about Plasmodium?
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2026 (4 sets)
- A. Fertilization takes place in mosquito gut
- B. Reproduces sexually in liver cells
- C. Reproduces sexually in RBCs
- D. Gametocytes develop in mosquito gut
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Q166
BIOLOGY
Unit 10: Ecology and Environment
Which of the following are primary consumers in a food chain?
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2026 (4 sets)
- A. Carnivores
- B. Parasites
- C. Predators
- D. Herbivores
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Q166
BIOLOGY
Unit 10: Ecology and Environment
Which of the following are primary consumers in a food chain?
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2026 (4 sets)
- A. Carnivores
- B. Parasites
- C. Predators
- D. Herbivores
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Q167
BIOLOGY
Unit 5: Human Physiology
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.
↻ Repeated question — also appeared in
2026 (2 sets)
- A. (a), (b) and (d) only
- B. (a) and (b) only
- C. (b), (c) and (d) only
- D. (a), (b) and (c) only
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Q168
BIOLOGY
Unit 10: Ecology and Environment
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.
- A. A is not correct but R is correct
- B. Both A and R are correct and R is the correct explanation of A
- C. Both A and R are correct but R is not the correct explanation of A
- D. A is correct but R is not correct
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Q169
BIOLOGY
Unit 5: Human Physiology
Which of the following is the correct order of arrangement of vertebrate column from the head to toe?
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2026 (2 sets)
- A. Cervical vertebra, thoracic vertebra, lumbar vertebra, sacrum
- B. Cervical vertebra, thoracic vertebra, sacrum, lumbar vertebra
- C. Sacrum, lumbar vertebra, thoracic vertebra, cervical vertebra
- D. Cervical vertebra, lumbar vertebra, thoracic vertebra, sacrum
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Q170
BIOLOGY
Unit 10: Ecology and Environment
Match List-I with List-II.
List-I:
A. Both species are harmed
B. One species is harmed and the other is benefited
C. Both species are benefited
D. One is benefited while the other has no effect
List-II:
I. Predation
II. Mutualism
III. Competition
IV. Commensalism
↻ Repeated question — also appeared in
2026 (1 set)
- A. A-III, B-I, C-II, D-IV
- B. A-III, B-IV, C-II, D-I
- C. A-I, B-II, C-III, D-IV
- D. A-II, B-I, C-IV, D-III
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Q171
BIOLOGY
Unit 6: Reproduction
If the diploid chromosome number of typical angiosperm is 36, what would be the chromosome number in its endosperm?
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2026 (3 sets)
- A. 72
- B. 18
- C. 36
- D. 54
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Q172
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following enzymes synthesizes precursor mRNA?
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2026 (2 sets)
- A. DNA polymerase
- B. RNA polymerase I
- C. RNA polymerase II
- D. RNA polymerase III
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Q173
BIOLOGY
Unit 9: Biotechnology and Its Applications
Given below are two statements
Statement I: Plasmids are autonomously replicating DNA.
Statement II: Plasmids are extrachromosomal DNA.
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2026 (1 set)
- A. Statement I is incorrect but Statement II is correct
- B. Both Statement I and Statement II are correct
- C. Both Statement I and Statement II are incorrect
- D. Statement I is correct but Statement II is incorrect
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Q176
BIOLOGY
Unit 10: Ecology and Environment
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 10% law
Choose the correct answer from the options given below:
↻ Repeated question — also appeared in
2026 (2 sets)
- A. (b) and (c) only
- B. (a), (b) and (c)
- C. (a) and (b) only
- D. (a) and (c) only
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Q177
BIOLOGY
Unit 5: Human Physiology
Match List-I with List-II.
List-I (A) Excess growth hormone, (B) Luteinizing hormone, (C) Vasopressin, (D) Oxytocin
List-II (I) Reabsorption of water and electrolytes in kidney, (II) Contraction of uterus during child birth, (III) Acromegaly, (IV) Ovulation
↻ Repeated question — also appeared in
2026 (1 set)
- A. A-IV, B-III, C-I, D-II
- B. A-III, B-IV, C-II, D-I
- C. A-III, B-IV, C-I, D-II
- D. A-II, B-IV, C-I, D-III
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Q178
BIOLOGY
Unit 8: Biology and Human Welfare
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:
- A. (a) and (d) only
- B. (a) and (b) only
- C. (b) and (c) only
- D. (b) and (d) only
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Q179
BIOLOGY
Unit 9: Biotechnology and Its Applications
During PCR, primers bind to the DNA strands in the ____ step.
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2026 (3 sets)
- A. ligation
- B. denaturation
- C. extension
- D. annealing
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Q180
BIOLOGY
Unit 7: Genetics and Evolution
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:
↻ Repeated question — also appeared in
2026 (2 sets)
- A. Statement I is incorrect but Statement II is correct
- B. Both Statement I and Statement II are correct
- C. Both Statement I and Statement II are incorrect
- D. Statement I is correct but Statement II is incorrect
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