PYQ Vault

Day 69: MH HSC Class 12 Chemistry

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

  1. Question 1

    Ionic Equilibria. Asked once: Mar 2023 (same type asked 6 times)

    Select and write the correct answer for the following multiple choice type of questions:
    Q.1.ii
    The pH of weak monoacidic base is 11.2, its OH−\mathrm{OH^{-}} ion concentration is:

    Tap an option to check your answer.

  2. Question 2

    Introduction to Polymer Chemistry. Asked once: Feb 2024 (same type asked 6 times)

    Q. 12
    Write the structure and name of monomer of (a) Nylon-6 (b) Natural rubber

  3. Question 3

    Introduction to Polymer Chemistry. Asked once: Mar 2019 (same type asked 6 times)

    Q.16
    Write chemical reactions to prepare the following polymers: (i) Teflon (ii) Nylon-6\text{Nylon-6} (iii) Dextron.

  4. Question 4

    Coordination Compounds. Asked once: Mar 2017 (same type asked 5 times)

    Q.7.i
    What is 'effective atomic number' (EAN\text{EAN})? Calculate the effective atomic number of the central metal atom in the following compounds:        a.K4[Fe(CN)6]     Fe (Z=26)\ \ \ \ \ \ \ a.\text{K}_{4}\left\lbrack \text{Fe}\left( \text{CN} \right)_{6} \right\rbrack\ \ \ \ \ \text{Fe (Z=26)}       b\ \ \ \ \ \ \text{b}. Cr(CO)6\text{Cr}\left( \text{CO} \right)_{6} Cr(Z=24\text{Z} = 24).

  5. Question 5

    Coordination Compounds. Asked once: Feb 2020 (same type asked 5 times)

    Q.18
    Calculate the effective atomic number (e.a.n.) of copper in [Cu(NH3)4]2+. [Z of Cu =29]\left\lbrack \text{Cu}\left( \text{NH}_{3} \right)_{4} \right\rbrack^{2 +}.\ \lbrack Z\ of\ Cu\ = 29\rbrack Explain linkage isomerism in coordination compounds with a suitable example.