PYQ Vault

Day 16: MH HSC Class 12 Chemistry

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

  1. Question 1

    Solutions. Asked 2 times: Mar 2022, Feb 2024

    Q. 11
    Henry's constant for CH3Br(g)\mathrm{CH_3Br_{(g)}} is 0.159 mol dm−3 bar−10.159\ \mathrm{mol\ dm^{-3}\ bar^{-1}} at 25 °C. Calculate its solubility in water at 25 °C, if its partial pressure is 0.164 bar.

  2. Question 2

    Solutions. Asked 2 times: Mar 2022, Feb 2024

    Q. 15
    What is osmotic pressure? How will you determine molar mass of solute from osmotic pressure?

  3. Question 3

    Chemical Thermodynamics. Asked 2 times: Mar 2022*, Mar 2023 (* = numbers or wording changed that year)

    Q. 19
    2000 mmol of an ideal gas expanded isothermally and reversibly from 20 L to 30 L at 300 K, calculate the work done in the process (R=8.314 JK−1 mol−1)(R = 8.314\ \mathrm{JK^{-1}\ mol^{-1}}).

  4. Question 4

    Solutions. Asked 2 times: Mar 2016*, Mar 2023 (* = numbers or wording changed that year)

    Q. 4
    Calculate the mole fraction of solute, if the vapour pressure of pure benzene at certain temperature is 640 mmHg and vapour pressure of solution of a solute in benzene is 600 mmHg.

  5. Question 5

    Transition and Inner Transition Elements. Asked 2 times: Mar 2022, Mar 2023

    Select and write the correct answer for the following multiple choice type of questions:
    Q.1.iv
    The spin only magnetic moment of Mn2+\mathrm{Mn^{2+}} ion is ______.

    Tap an option to check your answer.