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Day 73: JEE Mains Chemistry

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

  1. Question 1

    Chemical Thermodynamics. This type asked 3 times: 2021 Paper 17, 2021 Paper 20, 29 Jul 2022. This one: 29 Jul 2022 See all 3 of this type

    54
    When 600 mL600\text{ }mL of 0.2MHNO30.2MHNO_{3} is mixed with 400 mL400\text{ }mL of 0.1MNaOH0.1MNaOH solution in a flask, the rise in temperature of the flask is ____\_\_\_\_ ×10−2 ∘C\times10^{- 2}\ ^{\circ}C. (Enthalpy of neutralisation =57 kJ mol−1= 57\text{ }kJ{\text{ }mol}^{- 1} and Specific heat of water =4.2JK−1 g−1= 4.2JK^{- 1}{\text{ }g}^{- 1} ) (Neglect heat capacity of flask)

  2. Question 2

    The d- and f-Block Elements. This type asked 3 times: 2021 Paper 1, 27 Jun 2022, 28 Jul 2022. This one: 28 Jul 2022 See all 3 of this type

    40
    Which of the following has least tendency to liberate H2H_{2} from mineral acids?

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  3. Question 3

    Coordination Compounds. This type asked 3 times: 2021 Paper 10, 2021 Paper 22, 29 Jun 2022. This one: 29 Jun 2022 See all 3 of this type

    128
    Given below are two statements. Statement I: In CuSO4⋅5H2O,Cu−OCuSO_{4}\cdot 5H_{2}O,Cu - O bonds are present. Statement II: In CuSO4.5H2OCuSO_{4}.5H_{2}O, ligands coordinating with Cu(II)Cu(II) ion are OO-and SS-based ligands. In the light of the above statements, choose the correct answer from the options given below

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  4. Question 4

    The d- and f-Block Elements. This type asked 3 times: 2021 Paper 25, 26 Jun 2022, 28 Jun 2022. This one: 28 Jun 2022 See all 3 of this type

    38
    Which one of the lanthanoids given below is the most stable in divalent form?

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  5. Question 5

    The p-Block Elements. This type asked 3 times: 2021 Paper 17, 2021 Paper 22, 27 Jun 2022. This one: 27 Jun 2022 See all 3 of this type

    127
    Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Fluorine forms one oxoacid. Reason R: Fluorine has smallest size amongst all halogens and is highly electronegative. In the light of the above statements, choose the most appropriate answer from the options given below.

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