PYQ Vault

Day 10: MH HSC Class 12 Chemistry

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

  1. Question 1

    Transition and Inner Transition Elements. Asked 2 times: Jul 2025, Jun 2026

    Q. 30(ii)
    Write properties of interstitial compounds.

  2. Question 2

    Transition and Inner Transition Elements. Asked 2 times: Mar 2015, Jun 2026

    Q. 25
    (a) Write chemical reactions taking place during extraction of iron in zone of reduction of the blast furnace. (b) Write observed electronic configuration of gadolinium. (Z=64)

  3. Question 3

    Transition and Inner Transition Elements. Asked 2 times: Feb 2025, Jun 2026

    Q. 9
    (a) Write general electronic configuration of 3d series elements. (b) Write any two points which explain about the colour of a transition metal ion.

  4. Question 4

    Amines. Asked 2 times: Jul 2024, Feb 2026

    Q. 24(ii)
    Write the structure of zwitter ion of sulfanilic acid. Write the reaction between benzene diazonium chloride and phenol in alkaline medium.

  5. Question 5

    Chemical Thermodynamics. Asked 2 times: Mar 2019*, Feb 2026 (* = numbers or wording changed that year)

    Q. 20(ii)
    Calculate the work done in oxidation of 2 moles of SO2\mathrm{SO_2} at 298K, if SO2(g)+12O2(g)→SO3(g)\mathrm{SO_{2(g)} + \tfrac{1}{2}O_{2(g)} \rightarrow SO_{3(g)}} [Given : R=8.314 J/K/molR = 8.314\ \mathrm{J/K/mol}]