PYQ Vault

Day 70: 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)

    Select and write the correct answer for the following multiple choice type of questions :
    Q.1.i
    The spin only magnetic moment of Cr3+\mathrm{Cr^{3+}} cation is _____.

    Tap an option to check your answer.

  2. Question 2

    Transition and Inner Transition Elements. Asked once: Feb 2020 (same type asked 5 times)

    Q.17
    Write the general electronic configuration of lanthanoids. Why are most of the compounds of transition metals coloured?

  3. Question 3

    Coordination Compounds. Asked once: Mar 2016 (same type asked 5 times)

    Q.6.iii
    Write the formula of Tetraamminedichloroplatinum(IV) chloride\text{Tetraamminedichloroplatinum(IV) chloride}. How is propene converted into 1-bromopropane and 2-bromopropane?

  4. Question 4

    Chemical Thermodynamics. Asked once: Mar 2015 (same type asked 4 times)

    Q.3.i
    Determine whether the reactions with the following ΔH\Delta\text{H} and ΔS\Delta\text{S} values are spontaneous or non-spontaneous. State whether the reactions are exothermic or endothermic. a. ΔH=−110 kJ\Delta\text{H} = - 110\text{ kJ}, ΔS=+40 J K−1\Delta\text{S} = + 40\text{ J K}^{- 1} at 400 K400\text{ K}. b. ΔH=40 kJ\Delta\text{H} = 40\text{ kJ}, ΔS=−120 J K−1\Delta\text{S} = - 120\text{ J K}^{- 1} at 250 K250\text{ K}.

  5. Question 5

    Chemical Thermodynamics. Asked once: Mar 2015 (same type asked 4 times)

    Q.2.ii
    Write the definition for: a. Enthalpy of atomization b. Enthalpy of vaporization