PYQ Vault

Day 81: MH HSC Class 12 Chemistry

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

  1. Question 1

    Chemical Thermodynamics. Asked once: Feb 2025

    Q.28.a
    State whether entropy change is positive or negative in the following examples : (i) Melting of ice (ii) Vaporisation of a liquid

  2. Question 2

    Coordination Compounds. Asked once: Feb 2025

    Select and write the correct answer for the following multiple choice type of questions :
    Q.1.iv
    When excess of AgNO3\mathrm{AgNO_3} is added to a complex, one mole of AgCl is precipitated. The formula of complex is _____.

    Tap an option to check your answer.

  3. Question 3

    Electrochemistry. Asked once: Jul 2025

    Q. 7
    What is Salt bridge? Write the functions of salt bridge.

  4. Question 4

    Elements of Groups 16, 17 and 18. Asked once: Feb 2026

    Answer the following questions :
    Q.2.i
    Write the name of product obtained, when selenium is treated with magnesium metal.

  5. Question 5

    Green Chemistry and Nanochemistry. Asked once: Mar 2023

    Answer the following questions:
    Q.2.i
    Write the name of the technique used to know geometry of nanoparticles.