PYQ Vault

Day 22: MH HSC Class 12 Chemistry

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

  1. Question 1

    Ionic Equilibria. This type asked 4 times: Feb 2024, Jul 2024, Jul 2025, Jun 2026. This one: Jun 2026

    Select and write the correct answers for the following multiple choice type of questions :
    Q.1.vii
    The pH of buffer solution containing 0.05 mol NaF per litre and 0.01 mol HF per litre (pKa=3.1427)(\mathrm{p}K_a = 3.1427) is ____.

    Tap an option to check your answer.

  2. Question 2

    Solid State. This type asked 4 times: Mar 2023, Jul 2024, Feb 2026, Jun 2026. This one: Feb 2026

    Answer the following questions :
    Q.2.vi
    Copper has fcc structure with edge length 495 pm. What is the radius of copper atom in pm?

  3. Question 3

    Chemical Thermodynamics. This type asked 4 times: Mar 2019, Feb 2020, Feb 2025, Feb 2026. This one: Feb 2025

    Select and write the correct answer for the following multiple choice type of questions :
    Q.1.v
    The value of Δng\Delta n_g for the oxidation of 4 mole of sulphur dioxide to sulphur trioxide is _____.

    Tap an option to check your answer.

  4. Question 4

    Electrochemistry. This type asked 4 times: Feb 2020, Mar 2022, Jul 2024, Feb 2026. This one: Feb 2026

    Q. 14
    The standard potential of electrode Cu2+\mathrm{Cu^{2+}} (0.02 M) ∣Cu(s)\mid \mathrm{Cu_{(s)}} is 0.337 volt. Calculate its potential in volt.

  5. Question 5

    Elements of Groups 16, 17 and 18. This type asked 4 times: Mar 2017, Mar 2022, Feb 2024, Feb 2026. This one: Feb 2026

    Q. 31(ii)
    Write chemical formula of epsom salt. Give two uses of H2SO4\mathrm{H_2SO_4}.