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Day 3: JEE Mains Chemistry

5 questions. Try each one first, then open its answer.

  1. Question 1

    Organic Chemistry - Some Basic Principles and Techniques. This type asked 10 times: 26 Jun 2022, 28 Jun 2022, 28 Jul 2022, 31 Jan 2023, 8 Apr 2023, 13 Apr 2023, 3 Apr 2025, 7 Apr 2025, 24 Jan 2026 S2, 2 Apr 2026 S2. This one: 2 Apr 2026 S2 See all 10 of this type

    37
    Complete combustion of X g of an organic compound gave 0.25 g of CO2CO_{2} and 0.12 g of H2OH_{2}O. If the % of carbon is 25%25\% and of hydrogen is 4.89%4.89\%, then X=X = ____\_\_\_\_ ×10−3 g\times10^{- 3}\text{ }g. (Nearest integer) (Molar mass of C,HC,H and O are 12, 1 and 16 g mol−116\text{ }g{\text{ }mol}^{- 1} respectively )

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  2. Question 2

    Coordination Compounds. This type asked 10 times: 2021 Paper 4, 27 Jun 2022, 29 Jan 2023, 8 Apr 2023, 10 Apr 2023, 13 Apr 2023, 27 Jan 2024, 5 Apr 2024, 4 Apr 2025, 28 Jan 2026 S2. This one: 28 Jan 2026 S2 See all 10 of this type

    44
    The correct increasing order of spin-only magnetic moment values of the complex ions [MnBr4]2−(A),[Cu(H2O)6]2+(B),[Ni(CN)4]2−(C)\left\lbrack MnBr_{4} \right\rbrack^{2 -}(A),\left\lbrack Cu\left( H_{2}O \right)_{6} \right\rbrack^{2 +}(B),\left\lbrack Ni(CN)_{4} \right\rbrack^{2 -}(C) and [Ni(H2O)6]2+(D)\left\lbrack Ni\left( H_{2}O \right)_{6} \right\rbrack^{2 +}(D) is:

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  3. Question 3

    Chemical Bonding and Molecular Structure. This type asked 10 times: 2021 Paper 11, 2021 Paper 20, 26 Jun 2022, 29 Jun 2022, 25 Jul 2022, 30 Jan 2023, 8 Apr 2023, 11 Apr 2023, 29 Jan 2024, 7 Apr 2025. This one: 7 Apr 2025 See all 10 of this type

    41
    Match the LIST-I with LIST-II.
    LIST-I (Molecule/ion)LIST-II (Bond pairs : lone pairs on the central atom)
    A.
    ICl2−{ICl}_{2}^{-}
    		I.4:2
    B.
    H2OH_{2}O
    		II.4:1
    C.
    SO2{SO}_{2}
    		III.2 : 3
    D.
    XeF4{XeF}_{4}
    		IV.2 : 2
    Choose the correct answer from the options given below:

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  4. Question 4

    Amines. This type asked 9 times: 2021 Paper 6, 2021 Paper 16, 2021 Paper 26, 29 Jul 2022, 27 Jan 2024, 9 Apr 2024, 4 Apr 2025, 7 Apr 2025, 4 Apr 2026 S2. This one: 4 Apr 2026 S2 See all 9 of this type

    42
    The strongest conjugate acid will result from

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  5. Question 5

    Coordination Compounds. This type asked 9 times: 2021 Paper 11, 25 Jul 2022, 11 Apr 2023, 6 Apr 2024, 3 Apr 2025, 23 Jan 2026 S1, 24 Jan 2026 S2, 2 Apr 2026 S1, 4 Apr 2026 S2. This one: 4 Apr 2026 S2 See all 9 of this type

    35
    Consider the metal complexes [Ni(en)3]2+(A)\left\lbrack Ni(en)_{3} \right\rbrack^{2 +}(A), [NiCl4]2−(B)\left\lbrack NiCl_{4} \right\rbrack^{2 -}(B) and [Ni(NH3)6]2+(C)\left\lbrack Ni\left( NH_{3} \right)_{6} \right\rbrack^{2 +}(C). Choose the CORRECT option by considering the number of unpaired electron present in (A), (B) and (C) respectively and the order of frequency of absorption.

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