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Day 229: JEE Mains Chemistry

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

  1. Question 1

    Chemical Kinetics. Asked once: 28 Jan 2025 (same type asked 5 times) See all 5 of this type

    101
    consider the elementary reaction
    A( g)+B( g)→C( g)+D( g)A(\text{ }g) + B(\text{ }g) \rightarrow C(\text{ }g) + D(\text{ }g)
    If the volume of reaction mixture is suddenly reduced to 13\frac{1}{3} of its initial volume, the reaction rate will become ' xx ' times of the original reaction rate. The value of xx is :

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  2. Question 2

    Electrochemistry. Asked once: 2021 Paper 26 (same type asked 5 times) See all 5 of this type

    54
    Emf of the following cell at 298 K298\text{ }K in VV is x×10−2x \times 10^{- 2}.
    Zn∣Zn2+(0.1M)∣∣Ag+(0.01M)∣AgZn\left| Zn^{2 +}(0.1M) \right|\left| Ag^{+}(0.01M) \right|Ag
    The value of xx is ______. (Rounded off to the nearest integer) [Given: EZn2+/Zn0=−0.76 V;EAg+/Ag0=+0.80 V;2.303RT F=0.059E_{Zn^{2 +}/Zn}^{0}= - 0.76\text{ }V;E_{Ag^{+}/Ag}^{0}= + 0.80\text{ }V;\frac{2.303RT}{\text{ }F}= 0.059]

  3. Question 3

    Haloalkanes and Haloarenes. Asked once: 23 Jan 2025 (same type asked 5 times) See all 5 of this type

    110
    The ascending order of relative rate of solvolysis of following compounds is (A) (B) (C) (D)

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  4. Question 4

    The d- and f-Block Elements. Asked once: 28 Jul 2022 (same type asked 5 times) See all 5 of this type

    58
    The disproportionation of MnO42−MnO_{4}^{2 -} in acidic medium resulted in the formation of two manganese compounds AA and BB. If the oxidation state of MnMn in BB is smaller than that of AA, then the spin-only magnetic moment (μ)(\mu) value of BB in BMBM is ____ (Nearest integer)

  5. Question 5

    Coordination Compounds. Asked once: 27 Jul 2022 (same type asked 5 times) See all 5 of this type

    57
    The conductivity of a solution of complex with formula CoCl3(NH3)4CoCl_{3}\left( NH_{3} \right)_{4} corresponds to 1:11:1 electrolyte, then the primary valency of central metal ion is