PYQ Vault

Day 5: MH HSC Class 12 Chemistry

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

  1. Question 1

    Aldehydes, Ketones and Carboxylic Acids. Asked 3 times: Mar 2019, Feb 2024, Feb 2025

    Q. 14(i)
    Write the reaction for the preparation of : (i) acetaldehyde by Rosenmund reaction.

  2. Question 2

    Aldehydes, Ketones and Carboxylic Acids. Asked 3 times: Mar 2019, Feb 2024, Feb 2025

    Q. 14(ii)
    Write the reaction for the preparation of : (ii) benzaldehyde by Gatterman-Koch formylation.

  3. Question 3

    Biomolecules. Asked 3 times: Mar 2017, Mar 2023, Feb 2025

    Q.10
    Write preparation of glucose from sucrose.

  4. Question 4

    Coordination Compounds. Asked 3 times: Mar 2018, Jul 2024, Feb 2025

    Q. 20
    (a) Write the formula to calculate EAN. (b) Explain formation of [Co(NH3)6]3+\mathrm{[Co(NH_3)_6]^{3+}} complex ion with respect to : (i) Type of hybridisation (ii) Magnetic property

  5. Question 5

    Electrochemistry. Asked 3 times: Mar 2019, Feb 2020, Feb 2024

    Q.23
    Define electrochemical series and write its two applications.