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Day 72: JEE Mains Chemistry

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

  1. Question 1

    Equilibrium. This type asked 3 times: 2021 Paper 18, 29 Jul 2022, 31 Jan 2023. This one: 31 Jan 2023 See all 3 of this type

    132
    Incorrect statement for the use of indicators in acid-base titration is:

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  2. Question 2

    The p-Block Elements. This type asked 3 times: 2021 Paper 5, 2021 Paper 16, 31 Jan 2023. This one: 31 Jan 2023 See all 3 of this type

    51
    The oxidation state of phosphorus in hypophosphoric acid is +

  3. Question 3

    Solutions. This type asked 3 times: 27 Jun 2022, 29 Jul 2022, 30 Jan 2023. This one: 30 Jan 2023 See all 3 of this type

    58
    A solution containing 2 g2\text{ }g of a non-volatile solute in 20 g20\text{ }g of water boils at 373.52 K373.52\text{ }K. The molecular mass of the solute______ is g mol−1g\ mol^{-1}. (Nearest integer) Given, water boils at 373 K373\text{ }K, KbK_b for water =0.52 K kg mol−1= 0.52\text{ }K\text{ }kg\text{ }mol^{-1}

  4. Question 4

    Chemical Thermodynamics. This type asked 3 times: 2021 Paper 23, 28 Jul 2022, 29 Jan 2023. This one: 29 Jan 2023 See all 3 of this type

    138
    Which of the following relations are correct? (A) ΔU=q+pΔV\Delta U = q + p\Delta V (B) ΔG=ΔH−TΔS\Delta G = \Delta H - T\Delta S (C) ΔS=qrevT\Delta S =\frac{q_{rev}}{T} (D) ΔH=ΔU−ΔnRT\Delta H = \Delta U - \Delta nRT Choose the most appropriate answer from the options given below:

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  5. Question 5

    Amines. This type asked 3 times: 2021 Paper 8, 26 Jun 2022, 29 Jul 2022. This one: 29 Jul 2022 See all 3 of this type

    137
    The Hinsberg reagent is:

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