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Day 67: JEE Mains Chemistry

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

  1. Question 1

    Chemical Kinetics. This type asked 3 times: 11 Apr 2023, 27 Jan 2024, 5 Apr 2024. This one: 5 Apr 2024 See all 3 of this type

    56
    During Kinetic study of reaction 2 A+B→C+D2\text{ }A + B \rightarrow C + D, the following results were obtained:
    A[M]A\lbrack M\rbrack
    B[M]B\lbrack M\rbrack
    		initial rate of formation of DD
    I0.10.1
    6.0×10−36.0 \times10^{- 3}
    II0.30.2
    7.2×10−27.2 \times10^{- 2}
    III0.30.4
    2.88×10−12.88 \times10^{- 1}
    IV0.40.1
    2.40×10−22.40 \times10^{- 2}
    Based on above data, overall order of the reaction is ......

  2. Question 2

    Coordination Compounds. This type asked 3 times: 30 Jan 2023, 4 Apr 2024, 5 Apr 2024. This one: 5 Apr 2024 See all 3 of this type

    44
    The correct order of ligands arranged in increasing field strength.

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  3. Question 3

    The d- and f-Block Elements. This type asked 3 times: 2021 Paper 8, 4 Apr 2024, 5 Apr 2024. This one: 5 Apr 2024 See all 3 of this type

    46
    The metal that shows highest and maximum number of oxidation state is:

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  4. Question 4

    Electrochemistry. This type asked 3 times: 27 Jan 2024, 1 Feb 2024, 4 Apr 2024. This one: 4 Apr 2024 See all 3 of this type

    31
    What pressure (bar) of H2H_{2} would be required to make emf of hydrogen electrode zero in pure water at 25∘C25^{\circ}C ?

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  5. Question 5

    The d- and f-Block Elements. This type asked 3 times: 24 Jan 2023, 10 Apr 2023, 4 Apr 2024. This one: 4 Apr 2024 See all 3 of this type

    138
    A first-row transition metal in its +2 oxidation state has a spin-only magnetic moment value of 3.86 BM. The atomic number of the metal is

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