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Day 287: JEE Mains Chemistry

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

  1. Question 1

    Equilibrium. Asked once: 4 Apr 2024 (same type asked 6 times) See all 6 of this type

    121
    The equilibrium constant for the reaction
    SO3( g)⇌SO2( g)+12O2( g)SO_{3}(\text{ }g) \rightleftharpoons SO_{2}(\text{ }g) +\frac{1}{2}O_{2}(\text{ }g)
    is KC=4.9×10−2K_{C}= 4.9 \times10^{- 2}. The value of KCK_{C} for the reaction given below is 2SO2( g)+O2( g)⇌2SO3( g)2SO_{2}(\text{ }g) +O_{2}(\text{ }g) \rightleftharpoons 2SO_{3}(\text{ }g) is

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  2. Question 2

    Chemical Bonding and Molecular Structure. Asked once: 29 Jan 2023 (same type asked 6 times) See all 6 of this type

    57
    The number of molecules or ions from the following, which do not have odd number of electrons are (A) NO2NO_{2} (B) ICl4−ICl_{4}^{-} (C) BrF3BrF_{3} (D) ClO2ClO_{2} (E) NO2+NO_{2}^{+} (F) NO

  3. Question 3

    Coordination Compounds. Asked once: 2021 Paper 12 (same type asked 6 times) See all 6 of this type

    28
    What is the difference in the number of unpaired electrons in [NiCl4]2−\left\lbrack NiCl_{4} \right\rbrack^{2 -} and [Ni(CN)4]2−\left\lbrack Ni(CN)_{4} \right\rbrack^{2 -}

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  4. Question 4

    Some Basic Concepts of Chemistry. Asked once: 24 Jan 2025 (same type asked 6 times) See all 6 of this type

    111
    The elemental composition of a compound is 54.2%54.2\% C, 9.2%9.2\% H and 36.6%O36.6\% O. If the molar mass of the compound is 132 g mol−1132\text{ }g{\text{ }mol}^{- 1}, the molecular formula of the compound is : [Given : The relative atomic mass of C:H:O=C:H:O = 12:1:16]12:1:16\rbrack

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  5. Question 5

    Structure of Atom. Asked once: 26 Jun 2022 (same type asked 6 times) See all 6 of this type

    121
    The number of radial and angular nodes in 4 d4\text{ }d orbital are. respectively

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