PYQ Vault

Day 53: MH HSC Class 12 Chemistry

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

  1. Question 1

    Amines. Asked once: Jul 2024 (same type asked 2 times)

    Q. 14
    Write the reaction when ethylamine is treated with : (a) excess of ethyl bromide (b) Hinsberg's reagent

  2. Question 2

    Biomolecules. Asked once: Feb 2020 (same type asked 2 times)

    Q.9
    How many optical isomers are possible for glucose?

  3. Question 3

    Coordination Compounds. Asked once: Feb 2024 (same type asked 2 times)

    Q. 31(i)
    Mention the number of unpaired electrons and geometry of following complexes : (i) [NiCl4]2−\mathrm{[NiCl_4]^{2-}} (ii) [Ni(CN)4]2−\mathrm{[Ni(CN)_4]^{2-}}

  4. Question 4

    Green Chemistry and Nanochemistry. Asked once: Feb 2024 (same type asked 2 times)

    Q.5
    What is nano material? Write the reaction involved in sol-gel process during hydrolysis.

  5. Question 5

    Halogen Derivatives. Asked once: Feb 2025 (same type asked 2 times)

    Q. 13
    Identify 'A' and 'B' in the following reaction and rewrite the complete reaction : CH3−CH=CH2→PeroxideHBrA→−KBralcoholic KCNB\mathrm{CH_3{-}CH{=}CH_2 \xrightarrow[\text{Peroxide}]{HBr} A \xrightarrow[-KBr]{\text{alcoholic KCN}} B}