PYQ Vault

Day 62: MH HSC Class 12 Chemistry

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

  1. Question 1

    Halogen Derivatives. Asked once: Jul 2024 (same type asked 4 times)

    Q. 12
    Write salient features of SN1S_N1 mechanism.

  2. Question 2

    Ionic Equilibria. Asked once: Mar 2023 (same type asked 4 times)

    Q. 17
    A weak monobasic acid is 10% dissociated in 0.05 M solution. What is percent dissociation in 0.15 M solution?

  3. Question 3

    Chemical Thermodynamics. Asked once: Mar 2023 (same type asked 4 times)

    Q. 12(ii)
    Calculate the work done during the expansion of 2 moles of an ideal gas from 10 dm310\ \mathrm{dm^{3}} to 20 dm320\ \mathrm{dm^{3}} at 298 K in vacuum.

  4. Question 4

    Elements of Groups 16, 17 and 18. Asked once: Mar 2023 (same type asked 4 times)

    Q. 14
    Draw structures of the following compounds: (i) chloric acid (ii) peroxy disulphuric acid

  5. Question 5

    Halogen Derivatives. Asked once: Mar 2022 (same type asked 4 times)

    Q.31
    Write chemical reactions for the following conversions: (i) Ethyl bromide to ethyl methyl ether.  (ii)\ \text{(ii)} Ethyl bromide to ethene. (iii) Bromobenzene to toluene. (iv) Chlorobenzene to biphenyl.