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JEE Main 22 January 2025 Shift 2 Question Paper with Answers

22 January 2025 · January session · 73 questions

73 of the 75 questions from the JEE Main 22 January 2025 Shift 2 paper, each with its correct answer and tagged to the chapter it tests. Free to read, no account needed.

2 questions are held back from this paper while we re-check the transcription or the answer key. We would rather show you nothing than show you an answer we are not confident is right.

Physics
23
Chemistry
25
Mathematics
25

Physics — JEE Main 22 January 2025 Shift 2

Q1·Physics·Geometrical OpticsSingle correct
A symmetric thin biconvex lens is cut into four equal parts by two planes AB and CD as shown in figure. If the power of original lens is 4D then the power of a part of the divided lens is
  1. (A)8D
  2. (B)4D
  3. (C)D
  4. (D)2D

Correct answer: (D)

Step-by-step solution →
Q2·Physics·Properties of Solids and LiquidsSingle correct
A small rigid spherical ball of mass M is dropped in a long vertical tube containing glycerine. The velocity of the ball becomes constant after some time. If the density of glycerine is half of the density of the ball, then the viscous force acting on the ball will be (consider g as acceleration due to gravity)
  1. (A)32Mg\frac{3}{2}Mg23​Mg
  2. (B)Mg2\frac{Mg}{2}2Mg​
  3. (C)MgMgMg
  4. (D)2Mg2Mg2Mg

Correct answer: (B)

Step-by-step solution →
Q3·Physics·Units and MeasurementsSingle correct
The maximum percentage error in the measurement of density of a wire is [Given, mass of wire =(0.60±0.003)=(0.60\pm0.003)=(0.60±0.003) g, radius of wire =(0.50±0.01)=(0.50\pm0.01)=(0.50±0.01) cm, length of wire =(10.00±0.05)=(10.00\pm0.05)=(10.00±0.05) cm]
  1. (A)4
  2. (B)5
  3. (C)8
  4. (D)7

Correct answer: (B)

Step-by-step solution →
Q4·Physics·Alternating CurrentsSingle correct
A series LCR circuit is connected to an alternating source of emf E. The current amplitude at resonant frequency is I0I_0I0​. If the value of resistance R becomes twice of its initial value then amplitude of current at resonance will be
  1. (A)I0I_0I0​
  2. (B)I02\frac{I_0}{2}2I0​​
  3. (C)I02\frac{I_0}{\sqrt{2}}2​I0​​
  4. (D)2I02I_02I0​

Correct answer: (B)

Step-by-step solution →
Q5·Physics·Electric Field and Coulomb's LawSingle correct
For a short dipole placed at origin O, the dipole moment P is along x-axis, as shown in the figure. If the electric potential and electric field at A are V0V_0V0​ and E0E_0E0​, respectively, then the correct combination of the electric potential and electric field, respectively, at point B on the y-axis is given by
  1. (A)V02\frac{V_0}{2}2V0​​ and E016\frac{E_0}{16}16E0​​
  2. (B)zero and E08\frac{E_0}{8}8E0​​
  3. (C)zero and E016\frac{E_0}{16}16E0​​
  4. (D)V0V_0V0​ and E04\frac{E_0}{4}4E0​​

Correct answer: (C)

Step-by-step solution →
Q6·Physics·Units and MeasurementsSingle correct
Which one of the following is the correct dimensional formula for the capacitance in F? M, L, T and C stand for unit of mass, length, time and charge,
  1. (A)[F]=[C2M−2L2T2][F]=[C^{2}M^{-2}L^{2}T^{2}][F]=[C2M−2L2T2]
  2. (B)[F]=[CM−2L−2T−2][F]=[CM^{-2}L^{-2}T^{-2}][F]=[CM−2L−2T−2]
  3. (C)[F]=[CM−1L−2T2][F]=[CM^{-1}L^{-2}T^{2}][F]=[CM−1L−2T2]
  4. (D)[F]=[C2M−1L−2T2][F]=[C^{2}M^{-1}L^{-2}T^{2}][F]=[C2M−1L−2T2]

Correct answer: (D)

Step-by-step solution →
Q7·Physics·Atoms and NucleiSingle correct
An electron projected perpendicular to a uniform magnetic field B moves in a circle. If Bohr's quantization is applicable, then the radius of electronic orbit in the first excited state is:
  1. (A)2hπeB\sqrt{\frac{2h}{\pi eB}}πeB2h​​
  2. (B)4hπeB\sqrt{\frac{4h}{\pi eB}}πeB4h​​
  3. (C)h2πeB\sqrt{\frac{h}{2\pi eB}}2πeBh​​
  4. (D)hπeB\sqrt{\frac{h}{\pi eB}}πeBh​​

Correct answer: (D)

Step-by-step solution →
Q8·Physics·Kinetic Theory of GasesSingle correct
For a diatomic gas, if γ1=(CpCv)\gamma_1=\left(\frac{C_p}{C_v}\right)γ1​=(Cv​Cp​​) for rigid molecules and γ2=(CpCv)\gamma_2=\left(\frac{C_p}{C_v}\right)γ2​=(Cv​Cp​​) for another diatomic molecules, but also having vibrational modes. Then, which one of the following options is correct? (CpC_pCp​ and CvC_vCv​ are specific heats of the gas at constant pressure and volume)
  1. (A)γ2>γ1\gamma_2>\gamma_1γ2​>γ1​
  2. (B)γ2=γ1\gamma_2=\gamma_1γ2​=γ1​
  3. (C)2γ2=γ12\gamma_2=\gamma_12γ2​=γ1​
  4. (D)γ2<γ1\gamma_2<\gamma_1γ2​<γ1​

Correct answer: (D)

Step-by-step solution →
Q9·Physics·Electromagnetic InductionSingle correct
A rectangular metallic loop is moving out of a uniform magnetic field region to a field free region with a constant speed. When the loop is partially inside the magnetic field, the plot of magnitude of induced emf (ε\varepsilonε) with time (t) is given by
  1. (A)(1)
  2. (B)(2)
  3. (C)(3)
  4. (D)(4)

Correct answer: (D)

Step-by-step solution →
Q10·Physics·Dual Nature of Matter and RadiationSingle correct
A light source of wavelength λ\lambdaλ illuminates a metal surface and electrons are ejected with maximum kinetic energy of 2 eV. If the same surface is illuminated by a light source of wavelength λ2\frac{\lambda}{2}2λ​, then the maximum kinetic energy of ejected electrons will be (The work function of metal is 1 eV)
  1. (A)2 eV
  2. (B)6 eV
  3. (C)5 eV
  4. (D)4 eV

Correct answer: (C)

Step-by-step solution →
Q11·Physics·GravitationSingle correct
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): A simple pendulum is taken to a planet of mass and radius, 4 times and 2 times, respectively, than the earth. The time period of the pendulum remains same on earth and the planet. Reason (R): The mass of the pendulum remains unchanged on earth and the other planet. In the light of the above statements, choose the correct answer from the options given below:
  1. (A)Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
  2. (B)(A) is true but (R) is false
  3. (C)(A) is false but (R) is true
  4. (D)Both (A) and (R) are true and (R) is the correct explanation of (A)

Correct answer: (A)

Step-by-step solution →
Q12·Physics·Rotational MotionSingle correct
The torque due to the force (2i^+j^+2k^)\left(2\hat{i}+\hat{j}+2\hat{k}\right)(2i^+j^​+2k^) about the origin, acting on a particle whose position vector is (i^+j^+k^)\left(\hat{i}+\hat{j}+\hat{k}\right)(i^+j^​+k^), would be
  1. (A)i^−j^+k^\hat{i}-\hat{j}+\hat{k}i^−j^​+k^
  2. (B)i^+k^\hat{i}+\hat{k}i^+k^
  3. (C)i^−k^\hat{i}-\hat{k}i^−k^
  4. (D)j^−k^\hat{j}-\hat{k}j^​−k^

Correct answer: (C)

Step-by-step solution →
Q13·Physics·Work, Energy and PowerSingle correct
A force F⃗=2i^+bj^+k^\vec{F}=2\hat{i}+b\hat{j}+\hat{k}F=2i^+bj^​+k^ is applied on a particle and it undergoes a displacement i^−2j^−k^\hat{i}-2\hat{j}-\hat{k}i^−2j^​−k^. What will be the value of b, if work done on the particle is zero.
  1. (A)0
  2. (B)12\frac{1}{2}21​
  3. (C)13\frac{1}{3}31​
  4. (D)2

Correct answer: (B)

Step-by-step solution →
Q14·Physics·Wave OpticsSingle correct
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In Young's double slit experiment, the fringes produced by red light are closer as compared to those produced by blue light. Reason (R): The fringe width is directly proportional to the wavelength of light. In the light of above statements, choose the correct answer from the options given below:
  1. (A)Both (A) and (R) are true and (R) is the correct explanation of (A)
  2. (B)(A) is false but (R) is true
  3. (C)Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
  4. (D)(A) is true but (R) is false

Correct answer: (B)

Step-by-step solution →
Q15·Physics·KinematicsSingle correct
A ball of mass 100 g is projected with velocity 20 m/s at 60∘60^\circ60∘ with horizontal. The decrease in kinetic energy of the ball during the motion from point of projection to highest point is:
  1. (A)20 J
  2. (B)15 J
  3. (C)zero
  4. (D)5 J

Correct answer: (B)

Step-by-step solution →
Q16·Physics·Geometrical OpticsSingle correct
A transparent film of refractive index, 2.0 is coated on a glass slab of refractive index, 1.45. What is the minimum thickness of transparent film to be coated for the maximum transmission of Green light of wavelength 550 nm. [Assume that the light is incident nearly perpendicular to the glass surface.]
  1. (A)94.8 nm
  2. (B)68.7 nm
  3. (C)137.5 nm
  4. (D)275 nm

Correct answer: (C)

Step-by-step solution →
Q17·Physics·Properties of Solids and LiquidsSingle correct
The tube of length L is shown in the figure. The radius of cross section at the point (1) is 2 cm and at the point (2) is 1 cm, respectively. If the velocity of water entering at point (1) is 2 m/s, then velocity of water leaving the point (2) will be:
  1. (A)2 m/s
  2. (B)4 m/s
  3. (C)6 m/s
  4. (D)8 m/s

Correct answer: (D)

Step-by-step solution →
Q18·Physics·ThermodynamicsSingle correct
Given are statements for certain thermodynamic variables, (A) Internal energy, volume (V) and mass (M) are extensive variables. (B) Pressure (P), temperature (T) and density (ρ\rhoρ) are intensive variables. (C) Volume (V), temperature (T) and density (ρ\rhoρ) are intensive variables. (D) Mass (M), temperature (T) and internal energy are extensive variables. Choose the correct answer from the points given below:
  1. (A)(C) and (D) only
  2. (B)(D) and (A) only
  3. (C)(A) and (B) only
  4. (D)(B) and (C) only

Correct answer: (C)

Step-by-step solution →
Q19·Physics·Work, Energy and PowerSingle correct
A body of mass 100 g is moving in circular path of radius 2 m on vertical plane as shown in figure. The velocity of the body at point A is 10 m/s. The ratio of its kinetic energies at point B and C is: (Take acceleration due to gravity as 10 m/s2^22)
  1. (A)2+33\frac{2+\sqrt{3}}{3}32+3​​
  2. (B)2+23\frac{2+\sqrt{2}}{3}32+2​​
  3. (C)3+32\frac{3+\sqrt{3}}{2}23+3​​
  4. (D)3−22\frac{3-\sqrt{2}}{2}23−2​​

Correct answer: (C)

Step-by-step solution →
Q20·Physics·Magnetic Field of CurrentInteger
A proton is moving undeflected in a region of crossed electric and magnetic fields at a constant speed of 2×1052\times10^52×105 ms−1^{-1}−1. When the electric field is switched off, the proton moves along a circular path of radius 2 cm. The magnitude of electric field is x×104x\times10^4x×104 N/C, the value of x is ______. Take the mass of the proton =1.6×10−27=1.6\times10^{-27}=1.6×10−27 kg.

Correct answer: 2

Step-by-step solution →
Q21·Physics·Magnetic Field of CurrentInteger
Two long parallel wires X and Y, separated by a distance of 6 cm, carry currents of 5A and 4A, respectively, in opposite directions as shown in the figure. Magnitude of the resultant magnetic field at point P at a distance of 4 cm from wire Y is x×10−5x\times10^{-5}x×10−5 T. The value of x is ______. Take permeability of free space as μ0=4π×10−7\mu_0=4\pi\times10^{-7}μ0​=4π×10−7 SI units.

Correct answer: 1

Step-by-step solution →
Q22·Physics·Electromagnetic WavesInteger
A parallel plate capacitor of area A = 16 cm2^22 and separation between the plates 10 cm, is charged by a DC current. Consider a hypothetical plane surface of area As=3.2A_s=3.2As​=3.2 cm2^22 inside the capacitor and parallel to the plates. At an instant, the current through the circuit is 6A. At the same instant the displacement current through AsA_sAs​ is ______ mA.

Correct answer: 1200

Step-by-step solution →
Q23·Physics·Rotational MotionInteger
A tube of length 1m is filled completely with an ideal liquid of mass 2M, and closed at both ends. The tube is rotated uniformly in horizontal plane about one of its ends. If the force exerted by the liquid at the other end is F then angular velocity of the tube is FαM\sqrt{\frac{F}{\alpha M}}αMF​​ in SI unit. The value of α\alphaα is ______.

Correct answer: 1

Step-by-step solution →

Chemistry — JEE Main 22 January 2025 Shift 2

Q24·Chemistry·Chemical Bonding and Molecular StructureSingle correct
Arrange the following compounds in increasing order of their dipole moment: HBr, H2_22​S, NF3_33​ and CHCl3_33​
  1. (A)NF3<HBr<H2S<CHCl3NF_3 < HBr < H_2S < CHCl_3NF3​<HBr<H2​S<CHCl3​
  2. (B)HBr<H2S<NF3<CHCl3HBr < H_2S < NF_3 < CHCl_3HBr<H2​S<NF3​<CHCl3​
  3. (C)H2S<HBr<NF3<CHCl3H_2S < HBr < NF_3 < CHCl_3H2​S<HBr<NF3​<CHCl3​
  4. (D)CHCl3<NF3<HBr<H2SCHCl_3 < NF_3 < HBr < H_2SCHCl3​<NF3​<HBr<H2​S

Correct answer: (A)

Step-by-step solution →
Q25·Chemistry·BiomoleculesSingle correct
Identify the number of structure/s from the following which can be correlated to D-glyceraldehyde.
  1. (A)three
  2. (B)two
  3. (C)four
  4. (D)one

Correct answer: (A)

Step-by-step solution →
Q26·Chemistry·p-Block ElementsSingle correct
The maximum covalency of a non-metallic group 15 element 'E' with weakest E−-−E bond is:
  1. (A)5
  2. (B)3
  3. (C)6
  4. (D)4

Correct answer: (D)

Step-by-step solution →
Q27·Chemistry·Chemical KineticsSingle correct
Consider the given figure and choose the correct option:
  1. (A)Activation energy of backward reaction is E1E_1E1​ and product is more stable than reactant.
  2. (B)Activation energy of forward reaction is E1+E2E_1+E_2E1​+E2​ and product is more stable than reactant.
  3. (C)Activation energy of forward reaction is E1+E2E_1+E_2E1​+E2​ and product is less stable than reactant.
  4. (D)Activation energy of both forward and backward reaction is E1+E2E_1+E_2E1​+E2​ and reactant is more stable than product.

Correct answer: (C)

Step-by-step solution →
Q28·Chemistry·HydrocarbonsSingle correct
When sec-butylcyclohexane reacts with bromine in the presence of sunlight, the major product is:
  1. (A)(1)
  2. (B)(2)
  3. (C)(3)
  4. (D)(4)

Correct answer: (D)

Step-by-step solution →
Q29·Chemistry·p-Block ElementsSingle correct
The species which does not undergo disproportionation reaction is:
  1. (A)ClO2−ClO_2^-ClO2−​
  2. (B)ClO4−ClO_4^-ClO4−​
  3. (C)ClO−ClO^-ClO−
  4. (D)ClO3−ClO_3^-ClO3−​

Correct answer: (B)

Step-by-step solution →
Q30·Chemistry·AminesSingle correct
Match List-I (Compound) with List-II (Catalyst/Reagents). Choose the correct answer from the options given below:
List-I (Compound)List-II (Catalyst/Reagents)
A.see figureI.NaOH (aqueous)
B.see figureII.H2H_2H2​/Ni
C.see figureIII.LiAlH4LiAlH_4LiAlH4​, H2OH_2OH2​O
D.see figureIV.Sn, HCl
  1. (A)(A)-(III), (B)-(II), (C)-(IV), (D)-(I)
  2. (B)(A)-(II), (B)-(IV), (C)-(III), (D)-(I)
  3. (C)(A)-(II), (B)-(I), (C)-(III), (D)-(IV)
  4. (D)(A)-(III), (B)-(IV), (C)-(II), (D)-(I)

Correct answer: (D)

Step-by-step solution →
Q31·Chemistry·Organic Compounds Containing HalogensSingle correct
RBr →(i) Mg, dry ether (ii) H2O\xrightarrow{\text{(i) Mg, dry ether (ii) }H_2O}(i) Mg, dry ether (ii) H2​O​ 2-Methylbutane. The maximum number of RBr producing 2-Methylbutane by above sequence of reactions is ______. (Consider the structural isomers only)
  1. (A)4
  2. (B)5
  3. (C)3
  4. (D)1

Correct answer: (A)

Step-by-step solution →
Q32·Chemistry·Chemical ThermodynamicsSingle correct
Match List-I (Partial Derivative) with List-II (Thermodynamic Quantity). Choose the correct answer from the options given below:
List-I (Partial Derivative)List-II (Thermodynamic Quantity)
A.(∂G∂T)P\left(\frac{\partial G}{\partial T}\right)_P(∂T∂G​)P​I.CPC_PCP​
B.(∂H∂T)P\left(\frac{\partial H}{\partial T}\right)_P(∂T∂H​)P​II.−S-S−S
C.(∂G∂P)T\left(\frac{\partial G}{\partial P}\right)_T(∂P∂G​)T​III.CVC_VCV​
D.(∂U∂T)V\left(\frac{\partial U}{\partial T}\right)_V(∂T∂U​)V​IV.V
  1. (A)(A)-(II), (B)-(I), (C)-(III), (D)-(IV)
  2. (B)(A)-(II), (B)-(I), (C)-(IV), (D)-(III)
  3. (C)(A)-(I), (B)-(II), (C)-(IV), (D)-(III)
  4. (D)(A)-(II), (B)-(III), (C)-(I), (D)-(IV)

Correct answer: (B)

Step-by-step solution →
Q33·Chemistry·Coordination CompoundsSingle correct
The correct order of the following complexes in terms of their crystal field stabilization energies is:
  1. (A)[Co(NH3)4]2+<[Co(NH3)6]2+<[Co(en)3]3+<[Co(NH3)6]3+[Co(NH_3)_4]^{2+} < [Co(NH_3)_6]^{2+} < [Co(en)_3]^{3+} < [Co(NH_3)_6]^{3+}[Co(NH3​)4​]2+<[Co(NH3​)6​]2+<[Co(en)3​]3+<[Co(NH3​)6​]3+
  2. (B)[Co(NH3)4]2+<[Co(NH3)6]2+<[Co(NH3)6]3+<[Co(en)3]3+[Co(NH_3)_4]^{2+} < [Co(NH_3)_6]^{2+} < [Co(NH_3)_6]^{3+} < [Co(en)_3]^{3+}[Co(NH3​)4​]2+<[Co(NH3​)6​]2+<[Co(NH3​)6​]3+<[Co(en)3​]3+
  3. (C)[Co(NH3)6]2+<[Co(NH3)6]3+<[Co(NH3)4]2+<[Co(en)3]3+[Co(NH_3)_6]^{2+} < [Co(NH_3)_6]^{3+} < [Co(NH_3)_4]^{2+} < [Co(en)_3]^{3+}[Co(NH3​)6​]2+<[Co(NH3​)6​]3+<[Co(NH3​)4​]2+<[Co(en)3​]3+
  4. (D)[Co(en)3]3+<[Co(NH3)6]3+<[Co(NH3)6]2+<[Co(NH3)4]2+[Co(en)_3]^{3+} < [Co(NH_3)_6]^{3+} < [Co(NH_3)_6]^{2+} < [Co(NH_3)_4]^{2+}[Co(en)3​]3+<[Co(NH3​)6​]3+<[Co(NH3​)6​]2+<[Co(NH3​)4​]2+

Correct answer: (B)

Step-by-step solution →
Q34·Chemistry·SolutionsSingle correct
Density of 3 M NaCl solution is 1.25 g/mL. The molality of the solution is:
  1. (A)1.79 m
  2. (B)2 m
  3. (C)3 m
  4. (D)2.79 m

Correct answer: (D)

Step-by-step solution →
Q35·Chemistry·EquilibriumSingle correct
The molar solubility(s) of zirconium phosphate with molecular formula (Zr4+)3(PO43−)4(Zr^{4+})_3(PO_4^{3-})_4(Zr4+)3​(PO43−​)4​ is given by relation:
  1. (A)(Ksp6912)1/7\left(\frac{K_{sp}}{6912}\right)^{1/7}(6912Ksp​​)1/7
  2. (B)(Ksp5348)1/6\left(\frac{K_{sp}}{5348}\right)^{1/6}(5348Ksp​​)1/6
  3. (C)(Ksp8435)1/7\left(\frac{K_{sp}}{8435}\right)^{1/7}(8435Ksp​​)1/7
  4. (D)(Ksp9612)1/3\left(\frac{K_{sp}}{9612}\right)^{1/3}(9612Ksp​​)1/3

Correct answer: (A)

Step-by-step solution →
Q36·Chemistry·Electronic Effects and StabilitySingle correct
The most stable carbocation from the following is:
  1. (A)(1)
  2. (B)(2)
  3. (C)(3)
  4. (D)(4)

Correct answer: (A)

Step-by-step solution →
Q37·Chemistry·Classification of Elements and Periodicity in PropertiesSingle correct
Given below are two statements: Statement (I): An element in the extreme left of the periodic table forms acidic oxides. Statement (II): Acid is formed during the reaction between water and oxide of a reactive element present in the extreme right of the periodic table. In the light of the above statements, choose the correct answer from the options given below:
  1. (A)Statement-I is false but Statement-II is true.
  2. (B)Both Statement-I and Statement-II are false.
  3. (C)Statement-I is true but Statement-II is false.
  4. (D)Both Statement-I and Statement-II are true.

Correct answer: (A)

Step-by-step solution →
Q38·Chemistry·Atomic StructureSingle correct
Given below are two statements: Statement (I): A spectral line will be observed for a 2px→2py2p_x \to 2p_y2px​→2py​ transition. Statement (II): 2px2p_x2px​ and 2py2p_y2py​ are degenerate orbitals. In the light of the above statements, choose the correct answer from the options given below:
  1. (A)Both Statement-I and Statement-II are true.
  2. (B)Both Statement-I and Statement-II are false.
  3. (C)Statement-I is true but Statement-II is false.
  4. (D)Statement-I is false but Statement-II is true.

Correct answer: (D)

Step-by-step solution →
Q39·Chemistry·Purification and Characterisation of Organic CompoundsSingle correct
Given below are two statements: Statement (I): Nitrogen, sulphur, halogen and phosphorus present in an organic compound are detected by Lassaigne's Test. Statement (II): The elements present in the compound are converted from covalent form into ionic form by fusing the compound with Magnesium in Lassaigne's test. In the light of the above statements, choose the correct answer from the options given below:
  1. (A)Both Statement I and Statement II are true
  2. (B)Both Statement I and Statement II are false
  3. (C)Statement I is true but Statement II is false
  4. (D)Statement I is false but Statement II is true

Correct answer: (C)

Step-by-step solution →
Q40·Chemistry·Coordination CompoundsSingle correct
Identify the homoleptic complex(es) that is/are low spin. (A) [Fe(CN)5NO]2−[Fe(CN)_5NO]^{2-}[Fe(CN)5​NO]2− (B) [CoF6]3−[CoF_6]^{3-}[CoF6​]3− (C) [Fe(CN)6]4−[Fe(CN)_6]^{4-}[Fe(CN)6​]4− (D) [Co(NH3)6]3+[Co(NH_3)_6]^{3+}[Co(NH3​)6​]3+ (E) [Cr(H2O)6]2+[Cr(H_2O)_6]^{2+}[Cr(H2​O)6​]2+. Choose the correct answer from the options given below:
  1. (A)(B) and (E) only
  2. (B)(A) and (C) only
  3. (C)(C) and (D) only
  4. (D)(C) only

Correct answer: (C)

Step-by-step solution →
Q41·Chemistry·Aldehydes and KetonesSingle correct
Toluene (excess) →(i) CrO2Cl2, CS2 (ii) H3O+ (iii) NaHSO3\xrightarrow{\text{(i) }CrO_2Cl_2,\,CS_2\text{ (ii) }H_3O^+\text{ (iii) }NaHSO_3}(i) CrO2​Cl2​,CS2​ (ii) H3​O+ (iii) NaHSO3​​ Filter ⟶\longrightarrow⟶ Residue (A). Residue (A) + HCl (dil.) ⟶\longrightarrow⟶ Compound (B). Structure of residue (A) and compound (B) formed respectively is:
  1. (A)Structures (1)
  2. (B)Structures (2)
  3. (C)Structures (3)
  4. (D)Structures (4)

Correct answer: (D)

Step-by-step solution →
Q42·Chemistry·Redox Reactions and ElectrochemistrySingle correct
Given below are two statements: Statement (I): Corrosion is an electrochemical phenomenon in which pure metal acts as an anode and impure metal as a cathode. Statement (II): The rate of corrosion is more in alkaline medium than in acidic medium. In the light of the above statements, choose the correct answer from the options given below:
  1. (A)Both Statement I and Statement II are false
  2. (B)Statement I is false but Statement II is true
  3. (C)Both Statement I and Statement II are true
  4. (D)Statement I is true but Statement II is false

Correct answer: (D)

Step-by-step solution →
Q43·Chemistry·HydrocarbonsSingle correct
The alkane from below having two secondary hydrogens is:
  1. (A)4-Ethyl-3,4-dimethyloctane
  2. (B)2,2,4,4-Tetramethylhexane
  3. (C)2,2,3,3-Tetramethylpentane
  4. (D)2,2,4,5-Tetramethylheptane

Correct answer: (C)

Step-by-step solution →
Q44·Chemistry·HydrocarbonsInteger
The compound with molecular formula C6H6C_6H_6C6​H6​, which gives only one monobromo derivative and takes up four moles of hydrogen per mole for complete hydrogenation has ______ π\piπ electrons.

Correct answer: 8

Step-by-step solution →
Q45·Chemistry·d- and f-Block ElementsInteger
Niobium (Nb) and ruthenium (Ru) have 'x' and 'y' number of electrons in their respective 4d orbitals. The value of x + y is ______.

Correct answer: 11

Step-by-step solution →
Q46·Chemistry·Coordination CompoundsInteger
The complex of Ni2+Ni^{2+}Ni2+ ion and dimethyl glyoxime contains ______ number of Hydrogen (H) atoms.

Correct answer: 14

Step-by-step solution →
Q47·Chemistry·Chemical ThermodynamicsInteger
Consider the following cases of standard enthalpy of reaction (ΔHr∘\Delta H^\circ_rΔHr∘​ in kJ mol−1^{-1}−1): C2H6(g)+72O2(g)→2CO2(g)+3H2O(ℓ)C_2H_6(g)+\frac{7}{2}O_2(g)\to 2CO_2(g)+3H_2O(\ell)C2​H6​(g)+27​O2​(g)→2CO2​(g)+3H2​O(ℓ), ΔH1∘=−1550\Delta H^\circ_1=-1550ΔH1∘​=−1550; C(graphite)+O2(g)→CO2(g)C(graphite)+O_2(g)\to CO_2(g)C(graphite)+O2​(g)→CO2​(g), ΔH2∘=−393.5\Delta H^\circ_2=-393.5ΔH2∘​=−393.5; H2(g)+12O2(g)→H2O(ℓ)H_2(g)+\frac{1}{2}O_2(g)\to H_2O(\ell)H2​(g)+21​O2​(g)→H2​O(ℓ), ΔH3∘=−286\Delta H^\circ_3=-286ΔH3∘​=−286. The magnitude of ΔHf∘\Delta H^\circ_fΔHf∘​ of C2H6(g)C_2H_6(g)C2​H6​(g) is ______ kJ mol−1^{-1}−1. (Nearest integer)

Correct answer: 95

Step-by-step solution →
Q48·Chemistry·SolutionsInteger
20 mL of 2 M NaOH solution is added to 400 mL of 0.5 M NaOH solution. The final concentration of the solution is ______ ×10−2\times 10^{-2}×10−2 M. (Nearest integer)

Correct answer: 57

Step-by-step solution →

Mathematics — JEE Main 22 January 2025 Shift 2

Q49·Mathematics·Binomial Theorem and Its Simple ApplicationsSingle correct
Let α,β,γ\alpha,\beta,\gammaα,β,γ and δ\deltaδ be the coefficients of x7,x5,x3x^7,x^5,x^3x7,x5,x3 and xxx respectively in the expansion of (x+x3−1)5+(x−x3−1)5\left(x+\sqrt{x^3-1}\right)^5+\left(x-\sqrt{x^3-1}\right)^5(x+x3−1​)5+(x−x3−1​)5, x>1x>1x>1. If uuu and vvv satisfy the equations αu+βv=18\alpha u+\beta v=18αu+βv=18, γu+δv=20\gamma u+\delta v=20γu+δv=20, then u+vu+vu+v equals:
  1. (A)5
  2. (B)4
  3. (C)3
  4. (D)8

Correct answer: (A)

Step-by-step solution →
Q50·Mathematics·Permutations and CombinationsSingle correct
In a group of 3 girls and 4 boys, there are two boys B1B_1B1​ and B2B_2B2​. The number of ways, in which these girls and boys can stand in a queue such that all the girls stand together, all the boys stand together, but B1B_1B1​ and B2B_2B2​ are not adjacent to each other, is:
  1. (A)144
  2. (B)72
  3. (C)96
  4. (D)120

Correct answer: (A)

Step-by-step solution →
Q51·Mathematics·ParabolaSingle correct
Let P(4,43)P\left(4,4\sqrt{3}\right)P(4,43​) be a point on the parabola y2=4axy^2=4axy2=4ax and PQPQPQ be a focal chord of the parabola. If MMM and NNN are the foot of perpendiculars drawn from PPP and QQQ respectively on the directrix of the parabola, then the area of the quadrilateral PQMNPQMNPQMN is equal to:
  1. (A)26338\dfrac{263\sqrt{3}}{8}82633​​
  2. (B)17317\sqrt{3}173​
  3. (C)34338\dfrac{343\sqrt{3}}{8}83433​​
  4. (D)3433\dfrac{34\sqrt{3}}{3}3343​​

Correct answer: (C)

Step-by-step solution →
Q52·Mathematics·Matrices and DeterminantsSingle correct
For a 3×33\times33×3 matrix MMM, let trace (M)(M)(M) denote the sum of all the diagonal elements of MMM. Let AAA be a 3×33\times33×3 matrix such that ∣A∣=12|A|=\dfrac{1}{2}∣A∣=21​ and trace (A)=3(A)=3(A)=3. If B=adj⁡(adj⁡(2A))B=\operatorname{adj}(\operatorname{adj}(2A))B=adj(adj(2A)), then the value of ∣B∣+trace⁡(B)|B|+\operatorname{trace}(B)∣B∣+trace(B) equals:
  1. (A)56
  2. (B)132
  3. (C)174
  4. (D)280

Correct answer: (D)

Step-by-step solution →
Q53·Mathematics·Sequence and SeriesSingle correct
Suppose that the number of terms in an A.P. is 2k2k2k, k∈Nk\in\mathbb{N}k∈N. If the sum of all odd terms of the A.P. is 40, the sum of all even terms is 55 and the last term of the A.P. exceeds the first term by 27, then kkk is equal to
  1. (A)5
  2. (B)8
  3. (C)6
  4. (D)4

Correct answer: (A)

Step-by-step solution →
Q54·Mathematics·Three Dimensional GeometrySingle correct
Let a line pass through two distinct points P(−2,−1,3)P(-2,-1,3)P(−2,−1,3) and QQQ, and be parallel to the vector 3i^+2j^+2k^3\hat{i}+2\hat{j}+2\hat{k}3i^+2j^​+2k^. If the distance of the point QQQ from the point R(1,3,3)R(1,3,3)R(1,3,3) is 5, then the square of the area of △PQR\triangle PQR△PQR is equal to:
  1. (A)136
  2. (B)140
  3. (C)144
  4. (D)148

Correct answer: (A)

Step-by-step solution →
Q55·Mathematics·Limits and ContinuitySingle correct
If lim⁡x→∞(e1−e(1e−x1+x))x=α\displaystyle\lim_{x\to\infty}\left(\dfrac{e}{1-e}\left(\dfrac{1}{e}-\dfrac{x}{1+x}\right)\right)^x=\alphax→∞lim​(1−ee​(e1​−1+xx​))x=α, then the value of log⁡eα1+log⁡eα\dfrac{\log_e\alpha}{1+\log_e\alpha}1+loge​αloge​α​ equals:
  1. (A)e
  2. (B)e−2e^{-2}e−2
  3. (C)e2e^{2}e2
  4. (D)e−1e^{-1}e−1

Correct answer: (A)

Step-by-step solution →
Q56·Mathematics·Application of DerivativesSingle correct
Let f(x)=∫0x2t2−8t+15et dtf(x)=\displaystyle\int_0^{x^2}\dfrac{t^2-8t+15}{e^t}\,dtf(x)=∫0x2​ett2−8t+15​dt, x∈Rx\in\mathbb{R}x∈R. Then the numbers of local maximum and local minimum points of fff, respectively, are:
  1. (A)2 and 3
  2. (B)3 and 2
  3. (C)1 and 3
  4. (D)2 and 2

Correct answer: (A)

Step-by-step solution →
Q57·Mathematics·Three Dimensional GeometrySingle correct
The perpendicular distance, of the line x−12=y+2−1=z+32\dfrac{x-1}{2}=\dfrac{y+2}{-1}=\dfrac{z+3}{2}2x−1​=−1y+2​=2z+3​ from the point P(2,−10,1)P(2,-10,1)P(2,−10,1), is:
  1. (A)6
  2. (B)525\sqrt{2}52​
  3. (C)353\sqrt{5}35​
  4. (D)434\sqrt{3}43​

Correct answer: (C)

Step-by-step solution →
Q58·Mathematics·Differential EquationsSingle correct
If x=f(y)x=f(y)x=f(y) is the solution of the differential equation (1+y2)+(x−2etan⁡−1y)dydx=0(1+y^2)+\left(x-2e^{\tan^{-1}y}\right)\dfrac{dy}{dx}=0(1+y2)+(x−2etan−1y)dxdy​=0, y∈(−π2,π2)y\in\left(-\dfrac{\pi}{2},\dfrac{\pi}{2}\right)y∈(−2π​,2π​) with f(0)=1f(0)=1f(0)=1, then f(13)f\left(\dfrac{1}{\sqrt{3}}\right)f(3​1​) is equal to:
  1. (A)eπ/4e^{\pi/4}eπ/4
  2. (B)eπ/12e^{\pi/12}eπ/12
  3. (C)eπ/3e^{\pi/3}eπ/3
  4. (D)eπ/6e^{\pi/6}eπ/6

Correct answer: (D)

Step-by-step solution →
Q59·Mathematics·Indefinite IntegrationSingle correct
If ∫ex(xsin⁡−1x1−x2+sin⁡−1x(1−x2)3/2+x1−x2)dx=g(x)+C\displaystyle\int e^x\left(\dfrac{x\sin^{-1}x}{\sqrt{1-x^2}}+\dfrac{\sin^{-1}x}{\left(1-x^2\right)^{3/2}}+\dfrac{x}{1-x^2}\right)dx=g(x)+C∫ex(1−x2​xsin−1x​+(1−x2)3/2sin−1x​+1−x2x​)dx=g(x)+C, where CCC is the constant of integration, then g(12)g\left(\dfrac{1}{2}\right)g(21​) equals:
  1. (A)π6e2\dfrac{\pi}{6}\sqrt{\dfrac{e}{2}}6π​2e​​
  2. (B)π4e2\dfrac{\pi}{4}\sqrt{\dfrac{e}{2}}4π​2e​​
  3. (C)π6e3\dfrac{\pi}{6}\sqrt{\dfrac{e}{3}}6π​3e​​
  4. (D)π4e3\dfrac{\pi}{4}\sqrt{\dfrac{e}{3}}4π​3e​​

Correct answer: (C)

Step-by-step solution →
Q60·Mathematics·Quadratic EquationsSingle correct
Let α0\alpha_0α0​ and β0\beta_0β0​ be the distinct roots of 2x2+(cos⁡θ)x−1=02x^2+(\cos\theta)x-1=02x2+(cosθ)x−1=0, θ∈(0,2π)\theta\in(0,2\pi)θ∈(0,2π). If mmm and MMM are the minimum and the maximum values of α04+β04\alpha_0^4+\beta_0^4α04​+β04​, then 16(M+m)16(M+m)16(M+m) equals:
  1. (A)24
  2. (B)25
  3. (C)27
  4. (D)17

Correct answer: (B)

Step-by-step solution →
Q61·Mathematics·Sets, Relations and FunctionsSingle correct
Let A={1,2,3,4}A=\{1,2,3,4\}A={1,2,3,4} and B={1,4,9,16}B=\{1,4,9,16\}B={1,4,9,16}. Then the number of many-one functions f:A→Bf:A\to Bf:A→B such that 1∈f(A)1\in f(A)1∈f(A) is equal to:
  1. (A)127
  2. (B)151
  3. (C)163
  4. (D)139

Correct answer: (B)

Step-by-step solution →
Q62·Mathematics·Matrices and DeterminantsSingle correct
If the system of linear equations: x+y+2z=6x+y+2z=6x+y+2z=6, 2x+3y+az=a+12x+3y+az=a+12x+3y+az=a+1, −x−3y+bz=2b-x-3y+bz=2b−x−3y+bz=2b, where a,b∈Ra,b\in\mathbb{R}a,b∈R, has infinitely many solutions, then 7a+3b7a+3b7a+3b is equal to:
  1. (A)9
  2. (B)12
  3. (C)16
  4. (D)22

Correct answer: (C)

Step-by-step solution →
Q63·Mathematics·Vector AlgebraSingle correct
Let a⃗\vec{a}a and b⃗\vec{b}b be two unit vectors such that the angle between them is π3\dfrac{\pi}{3}3π​. If λa⃗+2b⃗\lambda\vec{a}+2\vec{b}λa+2b and 3a⃗−λb⃗3\vec{a}-\lambda\vec{b}3a−λb are perpendicular to each other, then the number of values of λ\lambdaλ in [−1,3][-1,3][−1,3] is:
  1. (A)3
  2. (B)2
  3. (C)1
  4. (D)0

Correct answer: (D)

Step-by-step solution →
Q64·Mathematics·ParabolaSingle correct
Let E:x2a2+y2b2=1E:\dfrac{x^2}{a^2}+\dfrac{y^2}{b^2}=1E:a2x2​+b2y2​=1, a>ba>ba>b and H:x2A2−y2B2=1H:\dfrac{x^2}{A^2}-\dfrac{y^2}{B^2}=1H:A2x2​−B2y2​=1. Let the distance between the foci of EEE and the foci of HHH be 232\sqrt{3}23​. If a−A=2a-A=2a−A=2, and the ratio of the eccentricities of EEE and HHH is 13\dfrac{1}{3}31​, then the sum of the lengths of their latus rectums is equal to:
  1. (A)10
  2. (B)7
  3. (C)8
  4. (D)9

Correct answer: (C)

Step-by-step solution →
Q65·Mathematics·Statistics and ProbabilitySingle correct
If AAA and BBB are two events such that P(A∩B)=0.1P(A\cap B)=0.1P(A∩B)=0.1, and P(A∣B)P(A|B)P(A∣B) and P(B∣A)P(B|A)P(B∣A) are the roots of the equation 12x2−7x+1=012x^2-7x+1=012x2−7x+1=0, then the value of P(Aˉ∪Bˉ)P(Aˉ∩Bˉ)\dfrac{P\left(\bar{A}\cup\bar{B}\right)}{P\left(\bar{A}\cap\bar{B}\right)}P(Aˉ∩Bˉ)P(Aˉ∪Bˉ)​ is:
  1. (A)53\dfrac{5}{3}35​
  2. (B)43\dfrac{4}{3}34​
  3. (C)94\dfrac{9}{4}49​
  4. (D)74\dfrac{7}{4}47​

Correct answer: (C)

Step-by-step solution →
Q66·Mathematics·Trigonometric FunctionsSingle correct
The sum of all values of θ∈[0,2π]\theta\in[0,2\pi]θ∈[0,2π] satisfying 2sin⁡2θ=cos⁡2θ2\sin^2\theta=\cos2\theta2sin2θ=cos2θ and 2cos⁡2θ=3sin⁡θ2\cos^2\theta=3\sin\theta2cos2θ=3sinθ is
  1. (A)π2\dfrac{\pi}{2}2π​
  2. (B)4\pi
  3. (C)5π6\dfrac{5\pi}{6}65π​
  4. (D)\pi

Correct answer: (D)

Step-by-step solution →
Q67·Mathematics·Complex NumbersSingle correct
Let the curve z(1+i)+zˉ(1−i)=4z(1+i)+\bar{z}(1-i)=4z(1+i)+zˉ(1−i)=4, z∈Cz\in\mathbb{C}z∈C, divide the region ∣z−3∣≤1|z-3|\le1∣z−3∣≤1 into two parts of areas α\alphaα and β\betaβ. Then ∣α−β∣|\alpha-\beta|∣α−β∣ equals:
  1. (A)1+π21+\dfrac{\pi}{2}1+2π​
  2. (B)1+π31+\dfrac{\pi}{3}1+3π​
  3. (C)1+π41+\dfrac{\pi}{4}1+4π​
  4. (D)1+π61+\dfrac{\pi}{6}1+6π​

Correct answer: (A)

Step-by-step solution →
Q68·Mathematics·Area Under CurvesSingle correct
The area of the region enclosed by the curves y=x2−4x+4y=x^2-4x+4y=x2−4x+4 and y2=16−8xy^2=16-8xy2=16−8x is:
  1. (A)83\dfrac{8}{3}38​
  2. (B)43\dfrac{4}{3}34​
  3. (C)5
  4. (D)8

Correct answer: (A)

Step-by-step solution →
Q69·Mathematics·Differential EquationsInteger
Let y=f(x)y=f(x)y=f(x) be the solution of the differential equation dydx+xyx2−1=x6+4x1−x2\dfrac{dy}{dx}+\dfrac{xy}{x^2-1}=\dfrac{x^6+4x}{\sqrt{1-x^2}}dxdy​+x2−1xy​=1−x2​x6+4x​, −1<x<1-1<x<1−1<x<1 such that f(0)=0f(0)=0f(0)=0. If 6∫−1/21/2f(x) dx=2π−α6\displaystyle\int_{-1/2}^{1/2}f(x)\,dx=2\pi-\alpha6∫−1/21/2​f(x)dx=2π−α then α2\alpha^2α2 is equal to ______.

Correct answer: 27

Step-by-step solution →
Q70·Mathematics·Straight LinesInteger
Let A(6,8)A(6,8)A(6,8), B(10cos⁡α,−10sin⁡α)B(10\cos\alpha,-10\sin\alpha)B(10cosα,−10sinα) and C(−10sin⁡α,10cos⁡α)C(-10\sin\alpha,10\cos\alpha)C(−10sinα,10cosα) be the vertices of a triangle. If L(a,9)L(a,9)L(a,9) and G(h,k)G(h,k)G(h,k) be its orthocenter and centroid respectively, then (5a−3h+6k+100sin⁡2α)(5a-3h+6k+100\sin2\alpha)(5a−3h+6k+100sin2α) is equal to ______.

Correct answer: 145

Step-by-step solution →
Q71·Mathematics·Straight LinesInteger
Let the distance between two parallel lines be 5 units and a point PPP lie between the lines at a unit distance from one of them. An equilateral triangle PQRPQRPQR is formed such that QQQ lies on one of the parallel lines, while RRR lies on the other. Then (QR)2(QR)^2(QR)2 is equal to ______.

Correct answer: 28

Step-by-step solution →
Q72·Mathematics·Binomial Theorem and Its Simple ApplicationsInteger
If ∑r=130r2(30Cr)230Cr−1=α×229\displaystyle\sum_{r=1}^{30}\dfrac{r^2\left(^{30}C_r\right)^2}{^{30}C_{r-1}}=\alpha\times2^{29}r=1∑30​30Cr−1​r2(30Cr​)2​=α×229, then α\alphaα is equal to ______.

Correct answer: 465

Step-by-step solution →
Q73·Mathematics·Sets, Relations and FunctionsInteger
Let A={1,2,3}A=\{1,2,3\}A={1,2,3}. The number of relations on AAA, containing (1,2)(1,2)(1,2) and (2,3)(2,3)(2,3), which are reflexive and transitive but not symmetric, is ______.

Correct answer: 3

Step-by-step solution →

Chapters tested in this paper

Open any chapter to practise every past-year question on that topic across all papers, and see how often it has actually appeared.

  • Properties of Solids and Liquids 172/186
  • Three Dimensional Geometry 176/186
  • Matrices and Determinants 180/186
  • Coordination Compounds 176/186
  • Sets, Relations and Functions 165/186
  • Sequence and Series 164/186
  • p-Block Elements 164/186
  • Rotational Motion 172/186
  • Redox Reactions and Electrochemistry 177/186
  • Geometrical Optics 172/186
  • Kinematics 156/186
  • Vector Algebra 173/186
  • Differential Equations 167/186
  • Probability 176/186
  • Permutations and Combinations 162/186
  • Magnetic Field of Current 147/186
  • Binomial Theorem and Its Simple Applications 158/186
  • Electromagnetic Waves 144/186
  • Chemical Bonding and Molecular Structure 151/186
  • Application of Derivatives 139/186
  • Limits and Continuity 149/186
  • d- and f-Block Elements 126/186
  • Thermodynamics 154/186
  • Aldehydes and Ketones 135/186
  • Equilibrium 163/186
  • Solutions 158/186
  • Chemical Thermodynamics 165/186
  • Units and Measurements 149/186
  • Hydrocarbons 126/186
  • Complex Numbers 165/186
  • Trigonometric Functions 144/186
  • Biomolecules 162/186
  • Chemical Kinetics 169/186
  • Gravitation 152/186
  • Electric Field and Coulomb's Law 133/186
  • Atomic Structure 161/186
  • Dual Nature of Matter and Radiation 155/186
  • Amines 133/186
  • Quadratic Equations 148/186
  • Work, Energy and Power 132/186
  • Electromagnetic Induction 120/186
  • Wave Optics 130/186
  • Area Under Curves 139/186
  • Kinetic Theory of Gases 135/186
  • Purification and Characterisation of Organic Compounds 116/186
  • Alternating Currents 108/186
  • Organic Compounds Containing Halogens 109/186
  • Straight Lines 114/186
  • Atoms 112/186
  • Classification of Elements and Periodicity in Properties 113/186
  • Parabola 101/186
  • Electronic Effects and Stability 74/186
  • Indefinite Integration 66/186
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