JEE Main 29 January 2025 Chemistry Question Paper with Answer Key Solutions (Available)

Download here the memory-based JEE Main 29 January 2025 Chemistry question paper with answer key solutions for both Shift 1 and Shift 2. Chemistry question paper PDFs by top coaching institutes will also be available here.

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JEE Main 29 January 2025 Chemistry Question Paper with Answer Key Solutions (Available)

JEE Main 29 January 2025 Chemistry Question Paper: Test takers can anticipate their probable scores for JEE Main 29 January 2025 Chemistry examination by going through the question paper and unofficial answer key solutions. The chemistry question paper comprises 25 questions in Paper 1 (B.Tech), out of which 20 are multiple-choice questions and 10 are numerical value questions. Furthermore, find the Session 1 Day 5 question paper along with answer keys for the other two subjects here. Candidates can also access the question paper PDFS for JEE Main 29 January 2025 Chemistry for Shift 1 and 2 by Resonance, Aakash, and Vedantu.

JEE Main 29 January 2025 Chemistry Shift 2 Question Paper with Answer Key Solutions

Here is JEE Main 29 January 2025 Chemistry question paper with answer key solutions for Shift 2. 

Q. No.QuestionsAnswers
1Which of the following form most stable carbocation?(Ph)3C-Br
2Number of σ and π bonds respectively in hex-1-en-4-yne are13, 3
30.41 g of BaSO4 is obtained from 0.2 g of organic compound in Carius method. What is the percentage of sulphur present in organic compound?28%
4Which element in group 15 has the lowest Ionisation energy?Bi
5The number of benzenoid structural isomers having molecular formula C9H12 which do not give Baeyer's reagent test is?8
6Consider the following thermochemical reactions and choose the correct option.
C(diamond) → C(graphite) + x KJ
C(diamond) + O2 → CO2 + y KJ
C(graphite) + O2 → CO2 + z KJ
x = y - z
7Which of the following will give azo dye test?Aniline
8Which of the following is an essential amino acid?Valine
9Which of the following ether react with HBr to form phenol?
10A drug becomes ineffective when it decomposes to 50% its concentration. If 16 mg of said drug becomes 4 mg in 12 months, find the time in which drug becomes ineffective given that decomposition of drug follows first order kinetics.6 months
11Which of the following gives predominantly O2 on electrolysis among the following?
A. Aq. AgNO3 (Pt electrodes)
B. White. AgNO3 (Ag electrodes)
C. Conc. H2SO4 (Pt electrodes)
D. Dilute H2SO4 (Pt electrodes)
AD
12Determine the type of oxide formed by an element (A) that has the smallest size among the following.
Li, Na, K, Be, B, Mg
A2O3
13Statement-I: In partition chromatography a thin film of liquid acts as stationary phase.
Statement-II: Paper chromatography is not a type of partition chromatography.
Statement 1 is correct, Statement 2 is incorrect
147.3 g Benzalacetone is synthesized from 10.6 g of benzaldehyde using acetone as another reactant.
Percentage yield of Benzalacetone is
50%
15How many spectral lines are observed when a sample of hydrogen atoms excited from n = 4 to n = 1?6
16Find number of non-bonding electron in NO2- ion is12

JEE Main January 2025 Chemistry Shift 1 Question Paper with Answer Key Solutions

Candidates can obtain the Chemistry question paper below with answer key solutions for JEE Main 29 January 2025 Shift 1.

Q. No.QuestionsAnswers
1Which of the following is animal starch?Glycogen
2Statement-1: Correct order of ionic radius for Mg2+, Na+, O2- & F-is F-> O2-> Na+ > Mg2+
Statement-2: Correct order of magnitude of gain Enthalpy for 17th group follows order CI > F > Br > I (Magnitude only)
Statement 1 is incorrect & Statement 2 is correct
3Calculate the total number of sigma and π bond in the given molecule?
15 bonds
4Chromite ore + Na2CO3 + O2 → insoluble product containing Fe.
Calculate the molar mass of insoluble product formed. (Given: Molar mass of Cr = 52 g/mol, Na = 23 g/mol, Fe = 56 g/mol, 0 = 16 g/mol)
160
5Consider the following complexes-
1. [Mn(CN)6]4-
2. [Fe(CN)6]4-
3. [Fe(CN)6]3-
4. [Co(CN)6]3-
Correct order of CFSE (Δ0) will be
4>3>2>1
6Consider the following reaction

Identify the final product P:
7What is the value of van't Hoff Factor for A2B if 30% of A2B is dissociated?1.60
8Find the order of the reaction
A+B → F
if the mechanism of the reaction is given below:
Step 1: A + B → D (slow)
Step 2: DC + E (fast)
Step 3: C+E → F (fast)
2
9Match the following 
(A) [Co(OX)3]3-        -        (i) sp3d2
(B) [FeF6]3-            -            (ii) d2sp3
(C) [Ni(CO)4]            -            (iii) dsp2
(D) [PtCl4]2-             -             (iv) sp3
A-(ii), B-(i), C-(iv), D-(iii)
10What is the correct Nernst equation representation for the following cell reaction
Mg(s) → Mg2+ +2e-
Ag++e- → Ag(s)
11The correct order of melting point of d-block elements is:Fe > Mn
12Consider the following reaction-

Find the mass of final product (D) formed in gm (nearest integer)
13
13λm is directly proportional to √c for an electrolyte, then molar conductance for the same electrolyte at infinite dilution showssmall increase
14Given that the ionisation enthalpy of element E(g) is 300 kJ/mol and electron gain enthalpy of A, B, C and D gases atoms are -320 kJ/mol, -340 kJ/mol, -200 kJ/mol and -250 kJ/mol, then what will be the correct order of ionic nature of compounds?EB>EA>ED>EC
15Graph between de Broglie wavelength (λD) and kinetic energy (K) of an electron is
16Which of the following ions is strongest oxidising agent
Pb4+
17How many of following can act as nucleophiles
6
18Consider the following reaction

If P is total pressure at equilibrium & Kp is equilibrium constant. Then α in terms of Kp & P is (Assume α << 1)
3√2kp2/P

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    JEE Main 29 January 2025 Question Paper: Physics and Mathematics

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    JEE Main 29 January 2025 Chemistry Question Paper PDFs by Coaching Institutions

    For both Shift 1 and Shift 2, JEE Main 29 January 2025 Chemistry answer key and question paper PDF links have been provided as released by Resonance, Aakash, and Vedantu in the below table:

    Coaching InstituteShiftsChemistry Question Paper with Answer Key PDFs
    Resonance Shift 1PDF download link to be updated soon
    Shift 2Resonance JEE Main Chemistry Question Paper and Answer Key 2025 January 29 Shift 2
    AakashShift 1Aakash JEE Main Chemistry Question Paper and Answer Key 2025 January 29 Shift 1
    Shift 2PDF download link to be updated soon
    VedantuShift 1PDF download link to be updated soon
    Shift 2PDF download link to be updated soon

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