PYQ Vault

Day 36: MH SSC Class 10 Science and Technology I

5 questions (6 parts). Try each one first, then open its answer.

  1. Question 1

    Periodic Classification of Elements. Asked once: Mar 2019 (same type asked 4 times)

    Q1(A)(2)
    In the Dobereiner's triad Li, Na, K, the atomic masses of lithium and potassium are 6.9 and 39.1 respectively. What will be the atomic mass of sodium?

  2. Question 2

    Carbon Compounds. Asked once: Mar 2022 (same type asked 3 times)

    Q1(B)(v)
    Write the IUPAC name for the following structural formula: CH3 ⁣− ⁣CH∣OH ⁣− ⁣CH3\mathrm{CH_3\!-\!\underset{\underset{\textstyle OH}{|}}{CH}\!-\!CH_3}

  3. Question 3

    Chemical Reactions and Equations. Asked once: Mar 2023 (same type asked 3 times)

    Q3(v)
    Identify the physical and chemical changes from the following phenomena: (a) Transformation of ice into water. (b) Ripening of fruit. (c) Milk turned into curd. (d) Evaporation of water. (e) Digestion of food in the stomach. (f) Iron filings get attracted towards the magnet.

  4. Question 4 (case study, 2 parts)

    Metallurgy. Asked once: Mar 2019 (same type asked 3 times)

    A tapping vessel opens in a tank-like container that is tapering on the lower side. The tank has an outlet for water on the upper side and a water inlet on the lower side. Finely ground ore is released in the tank. A forceful jet of water is introduced in the tank from the lower side and gangue particles and pure ore are separated by this method.
    Q2(7)(i)
    The above description is of which gravity (gravitation) separation method?
    Q2(7)(ii)
    Draw a labelled diagram of this method.

  5. Question 5

    Metallurgy. Asked once: Mar 2020 (same type asked 3 times)

    Q2(B)(v)
    Write a short note on Alloying.