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.

Both (A) and (R) are true but (R) is NOT the correct explanation of (A)

JEE Main 2025 January 22, Shift 2 Question Paper with Solutions

Q: How many questions are in the JEE Main 2025 January 22, Shift 2 paper?

The JEE Main 2025 January 22, Shift 2 paper has 75 questions — Physics (25), Chemistry (25) and Mathematics (25). Every question is on this page with its correct answer and a step-by-step solution.

Q: What is the marking scheme for JEE Main?

JEE Main awards +4 marks for each correct answer and −1 for a wrong answer, with 0 for questions left unattempted. The paper covers Physics, Chemistry and Mathematics.

Q: Are the answer key and step-by-step solutions provided for the 2025 January 22, Shift 2 paper?

Yes — every question shows the correct answer (answer key) and a detailed step-by-step solution, free to read online.

Q: Can I take the JEE Main 2025 January 22, Shift 2 paper as a timed mock test?

Yes. With a free JEEnify account you can attempt this exact paper as a timed test in the real exam interface, then see your score and weak-area analysis.

All 75 questions from the JEE Main 2025 (January 22, Shift 2) shift — Physics (25), Chemistry (25) and Mathematics (25) — each with the correct answer (answer key) and a step-by-step solution. Read it free online, or attempt the full paper as a timed mock test.

Physics PYQs 2025 Chemistry PYQs 2025 Mathematics PYQs 2025

Chemistry25 questions

Q51Single correctPurification and Characterisation of Organic Compounds

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 :

(A)

Statement I is false 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 true but Statement II is false

Q52Single correctSolutions

Density of 3 M NaCl solution is 1.25 g/mL. The molality of the solution is :

(A)

1.79 m

(B)

2.79 m

(C)

2 m

(D)

3 m

Q53Single correctCoordination Compounds

The correct order of the following complexes in terms of their crystal field stabilization energies is:

(A)

[C o (N H_{3})_{4}]^{2 +} < [C o (N H_{3})_{6}]^{2 +} < [C o (e n)_{3}]^{3 +} < [C o (N H_{3})_{6}]^{3 +}

(B)

[C o (N H_{3})_{6}]^{2 +} < [C o (N H_{3})_{6}]^{3 +} < [C o (N H_{3})_{4}]^{2 +} < [C o (e n)_{3}]^{3 +}

(C)

[C o (e n)_{3}]^{3 +} < [C o (N H_{3})_{6}]^{3 +} < [C o (N H_{3})_{6}]^{2 +} < [C o (N H_{3})_{4}]^{2 +}

(D)

[C o (N H_{3})_{4}]^{2 +} < [C o (N H_{3})_{6}]^{2 +} < [C o (N H_{3})_{6}]^{3 +} < [C o (e n)_{3}]^{3 +}

Q54Single correctRedox Reactions and Electrochemistry

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:

(A)

Both Statement I and Statement II are true

(B)

Statement I is false but Statement II is true

(C)

Statement I is true but Statement II is false

(D)

Both Statement I and Statement II are false

Q55Single correctChemical Kinetics

Consider the given figure and choose the correct option:

Energy diagram showing reactant, activated complex at peak with E1 marked, product at lower energy than reactant with E2 marked from product to reactant level, and reaction coordinate on x-axis

(A)

Activation energy of both forward and backward reaction is

E_{1} + E_{2}

and reactant is more stable than product

(B)

Activation energy of forward reaction is

E_{1} + E_{2}

and product is less stable than reactant

(C)

Activation energy of backward reaction is

E_{1}

and product is more stable than reactant

(D)

Activation energy of forward reaction is

E_{1} + E_{2}

and product is more stable than reactant

Q56Single correctHydrocarbons

The maximum number of RBr producing 2-methylbutane by above sequence of reactions is ______ (Consider the structural isomers only)

Reaction scheme showing RBr reacting with (i) Mg, dry ether then (ii) H2O to produce 2-Methylbutane structure

(A)

(B)

(C)

(D)

Q57Single correctp-Block Elements

The species which does not undergo disproportionation reaction is:

(A)

ClO_{3}^{-}

(B)

ClO^{-}

(C)

ClO_{2}^{-}

(D)

ClO_{4}^{-}

Q58Single correctEquilibrium

The molar solubility(s) of zirconium phosphate with molecular formula

(Z r^{4 +})_{3} (P O_{4}^{3 -})_{4}

is given by relation:

(A)

(\frac{K _{s p}}{9612})^{\frac{1}{3}}

(B)

(\frac{K _{s p}}{6912})^{\frac{1}{7}}

(C)

(\frac{K _{s p}}{8435})^{\frac{1}{7}}

(D)

(\frac{K _{s p}}{5348})^{\frac{1}{6}}

Q59Single correctCoordination Compounds

Identify the homoleptic complex(es) that is/are low spin. (A)

[F e (CN)_{5} NO]^{2 -}

(B)

[CoF_{6}]^{3 -}

(C)

[F e (CN)_{6}]^{4 -}

(D)

[C o (N H_{3})_{6}]^{3 +}

(E)

[C r (H_{2} O)_{6}]^{2 +}

Choose the correct answer from the options given below:

(A)

(B)

(C)

(A) and (C) only

(D)

(B) and (E) only

Q60Single correctChemical Thermodynamics

Match List - I with List - II.

List - I (Partial Derivatives)	List - II (Thermodynamic Quantity)
A. $(\frac{\partial G}{\partial T})_{P}$	I. Cp
B. $(\frac{\partial H}{\partial T})_{P}$	II. -S
C. $(\frac{\partial G}{\partial P})_{T}$	III. Cv
D. $(\frac{\partial U}{\partial T})_{V}$	IV. V

(A)

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

(B)

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

(C)

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

(D)

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

Q61Single correctBiomolecules

Identify the number of structure/s from the following which can be correlated to D-glyceraldehyde.

(A)

four

(B)

one

(C)

two

(D)

three

Q62Single correctAtomic Structure

Given below are two statements: Statement (I): A spectral line will be observed for a

2 p_{x} \to 2 p_{y}

transition. Statement (II):

2 P_{x}

and

2 p_{y}

are degenerate orbitals. In the light of the above statements, choose the correct answer from the options given below:

(A)

Both Statement I and Statement II are true

(B)

Statement I is false but Statement II is true

(C)

Both Statement I and Statement II are false

(D)

Statement I is true but Statement II is false

Q63Single correctClassification of Elements and Periodicity in Properties

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 :

(A)

Statement I is true but Statement II is false

(B)

Both Statement I and Statement II are true

(C)

Both Statement I and Statement II are false

(D)

Statement I is false but Statement II is true

Q64Single correctHydrocarbons

Toluene (excess) (i) C r O_{2} C l_{2}, C S_{2} (ii) H_{3} O^{+} Filter ⟶ Residue (A) + H Cl (dil) (iii) N a H S O_{3} Compound (B)

. Structure of residue (A) and compound (B) formed respectively is:

(A)

Benzaldehyde structure (CHO on benzene) labeled as A, Sodium benzoate structure (COONa on benzene) labeled as B

[A] =

Benzaldehyde (CHO group on benzene)

, [B] =

Sodium benzoate (COONa group on benzene)

(B)

Benzaldehyde structure labeled as A, Benzoic acid structure (COOH on benzene) labeled as B

[A] =

Benzaldehyde (H-C=O on benzene)

, [B] =

Benzoic acid (C=O with OH on benzene)

(C)

Phenylacetaldehyde chromium complex structure labeled as A, Benzaldehyde structure labeled as B

[A] =

Phenylacetaldehyde (CH(OCrOHCl)

on benzene)

, [B] =

Benzaldehyde (H-C=O on benzene)

(D)

Benzyl alcohol sulfonate structure labeled as A, Benzaldehyde structure labeled as B

[A] =

Benzyl alcohol (H-C-OH with SO

Na on benzene)

, [B] =

Benzaldehyde (H-C=O on benzene)

Q65Single correctHydrocarbons

The alkane from below having two secondary hydrogens is :

(A)

4-Ethyl-3,4-dimethyloctane

(B)

2,2,3,3-Tetramethylpentane

(C)

2,2,4,5-Tetramethylheptane

(D)

2,2,4,4-Tetramethylhexane

Q66Single correctHydrocarbons

When sec-butylcyclohexane reacts with bromine in the presence of sunlight, the major product is :

(A)

sec-Butylcyclohexane with Br substituted on the tertiary carbon of the sec-butyl group

Cyclohexane with sec-butyl group where Br is on the tertiary carbon of the butyl group

(B)

sec-Butylcyclohexane with Br on secondary carbon of the butyl group adjacent to cyclohexane ring

Cyclohexane with sec-butyl-Br where Br is on secondary carbon adjacent to cyclohexane

(C)

Cyclohexane with Br on the tertiary carbon (junction with sec-butyl group) of the ring

Cyclohexane with Br on tertiary carbon of cyclohexane ring and sec-butyl group

(D)

sec-Butylcyclohexane with Br on primary (methyl) carbon of sec-butyl group

sec-Butyl group with Br on primary carbon attached to cyclohexane

Q67Single correctSome Basic Principles of Organic Chemistry

The most stable carbocation from the following is :

(A)

Benzyl cation with CH2+ group attached to benzene ring, methyl group at meta position

m-Methylbenzyl cation (

C H_{3}

at meta position,

C H_{2}^{+}

attached to benzene)

(B)

m-Methoxybenzyl cation (

OCH_{3}

at meta position,

C H_{2}^{+}

attached to benzene)

(C)

p-Methoxybenzyl cation (

OCH_{3}

at para position,

C H_{2}^{+}

attached to benzene)

(D)

p-Methylbenzyl cation (

C H_{3}

at para position,

C H_{2}^{+}

attached to benzene)

Q68Single correctOrganic Compounds Containing Nitrogen

Match the Compounds (List - I) with the appropriate Catalyst/Reagents (List - II) for their reduction into corresponding amines. List-I (Compounds): (A) R-C(=O)-

N H_{2}

, (B) Nitrobenzene, (C) R-C≡N, (D) Quinoline derivative with N-R. List-II (Catalyst/Reagents): (I) NaOH (aqueous), (II)

H_{2}

/Ni, (III)

L i A l H_{4}

H_{2}

O, (IV) Sn, HCl. Choose the correct answer from the options given below:

Matching table with List-I showing drawn structures: (A) Amide R-CONH2, (B) Nitrobenzene, (C) Nitrile R-CN, (D) Quinoline N-oxide derivative; and List-II showing reagents: (I) NaOH, (II) H2/Ni, (III) LiAlH4, (IV) Sn/HCl

(A)

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

(B)

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

(C)

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

(D)

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

Q69Single correctChemical Bonding and Molecular Structure

Arrange the following compounds in increasing order of their dipole moment: HBr,

H_{2}

N F_{3}

and

C H C l_{3}

(A)

H_{2}

S < HBr <

N F_{3}

C H C l_{3}

(B)

N F_{3}

< HBr <

H_{2}

S <

C H C l_{3}

(C)

HBr <

H_{2}

S <

N F_{3}

C H C l_{3}

(D)

C H C l_{3}

N F_{3}

< HBr <

H_{2}

Q70Single correctp-Block Elements

The maximum covalency of a non-metallic group 15 element 'E' with weakest E-E bond is:

(A)

(B)

(C)

(D)

Q71NumericalHydrocarbons

The compound with molecular formula

C_{6} H_{6}

, which gives only one monobromo derivative and takes up four moles of hydrogen per mole for complete hydrogenation has _____

π

electrons.

Q72NumericalSolutions

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 _____

\times 1 0^{- 2}

M. (Nearest integer)

Q73NumericalChemical Thermodynamics

Consider the following cases of standard enthalpy of reaction (

Δ H_{r}^{\circ}

in kJ mo

l^{- 1}

C_{2} H_{6} (g) + \frac{7}{2} O_{2} (g) \to 2 C O_{2} (g) + 3 H_{2} O (l)

Δ H_{1}^{\circ} = - 1550

C (graphite) + O_{2} (g) \to C O_{2} (g)

Δ H_{2}^{\circ} = - 393.5

H_{2} (g) + \frac{1}{2} O_{2} (g) \to H_{2} O (l)

Δ H_{3}^{\circ} = - 286

. The magnitude of

Δ H_{f}^{\circ} (C_{2} H_{6} (g))

is _____ kJ mo

l^{- 1}

(Nearest integer).

Q74Numericald- and f-Block Elements

Niobium (Nb) and ruthenium (Ru) have 'x' and 'y' number of electrons in their respective 4d orbitals. The value of

x + y

is _____.

Q75NumericalCoordination Compounds

The complex of

N i^{2 +}

ion and dimethyl glyoxime contains _____ number of Hydrogen (H) atoms.

More JEE Main 2025 papers

Frequently Asked Questions

How many questions are in the JEE Main 2025 January 22, Shift 2 paper?

The JEE Main 2025 January 22, Shift 2 paper has 75 questions — Physics (25), Chemistry (25) and Mathematics (25). Every question is on this page with its correct answer and a step-by-step solution.

What is the marking scheme for JEE Main?

JEE Main awards +4 marks for each correct answer and −1 for a wrong answer, with 0 for questions left unattempted. The paper covers Physics, Chemistry and Mathematics.

Are the answer key and step-by-step solutions provided for the 2025 January 22, Shift 2 paper?

Yes — every question shows the correct answer (answer key) and a detailed step-by-step solution, free to read online.

Can I take the JEE Main 2025 January 22, Shift 2 paper as a timed mock test?

Yes. With a free JEEnify account you can attempt this exact paper as a timed test in the real exam interface, then see your score and weak-area analysis.

Solved this paper? Calculate your JEE Main score · most important chapters · formula sheets · all free tools.

JEE Main 2025 January 22, Shift 2 Question Paper with Solutions

Physics25 questions

Chemistry25 questions

Mathematics25 questions

More JEE Main 2025 papers

Frequently Asked Questions