PYQ Vault

Day 60: MH HSC Class 12 Chemistry

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

  1. Question 1

    Transition and Inner Transition Elements. Asked once: Feb 2024 (same type asked 5 times)

    Answer the following questions :
    Q.2.v
    The compounds of Ti4+\mathrm{Ti^{4+}} ions are colourless due to ......

  2. Question 2

    Alcohols, Phenols and Ethers. Asked once: Mar 2017 (same type asked 5 times)

    Q.8.ii
    Explain the mechanism of alkaline hydrolysis of tert-butyl bromide with energy profile diagram. Define carbolic acid. How is carbolic acid prepared from benzene sulphonic acid?

  3. Question 3

    Solid State. Asked once: Mar 2023 (same type asked 5 times)

    Q. 29(i)
    Silver crystallizes in fcc structure. If edge length of unit cell is 400 pm, calculate density of silver (Atomic mass of Ag = 108).

  4. Question 4

    Coordination Compounds. Asked once: Mar 2018 (same type asked 5 times)

    Q.7.iv
    How glucose is prepared from cane sugar? Write the formula of the complex: copper(II)\text{copper}\left( \text{II} \right) hexacyanoferrate(II)\text{hexacyanoferrate}\left( \text{II} \right).

  5. Question 5

    Chemical Thermodynamics. Asked once: Feb 2020 (same type asked 4 times)

    Q.6.vi
    For a reaction, A→B\text{A} \rightarrow \text{B}. ΔH∘=−37.4 kJ\Delta\text{H}^{\circ} = - 37.4\text{ kJ}, ΔS∘=175.8 J K−1\Delta\text{S}^{\circ} = 175.8\text{ J K}^{- 1}. At what temperature will the reaction be spontaneous?