PYQ Vault

Day 80: MHT-CET Chemistry

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

  1. Question 1

    Solid State. Asked 3 times: 21 Apr 2025 S2*, 18 Apr 2026 S2*, 19 Apr 2026 S2 (* = numbers or wording changed that year) See all 3 times it was asked

    24
    Calculate the total volume of simple cubic unit cell in cm3\mathrm{cm^3} if void volume is 2.0×10−23 cm32.0 \times 10^{-23}\ \mathrm{cm^3}

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  2. Question 2

    Ionic Equilibria. Asked 3 times: 9 May 2024 S2*, 13 May 2024 S2*, 19 Apr 2026 S1 (* = numbers or wording changed that year) See all 3 times it was asked

    12
    What is the pH of solution containing 5×10−4 M H+5 \times 10^{-4}\ \mathrm{M\,H^+} ion?

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  3. Question 3

    Structure of Atom. Asked 3 times: 3 May 2023 S2*, 11 May 2023 S1*, 19 Apr 2026 S1 (* = numbers or wording changed that year) See all 3 times it was asked

    3
    What is the wave number of lowest transition associated with Paschen series?

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  4. Question 4

    Aldehydes, Ketones and Carboxylic Acids. Asked 3 times: 3 May 2023 S1, 11 May 2024 S2, 18 Apr 2026 S1 See all 3 times it was asked

    39
    Identify the reagent 'R' used in the following reaction C6H5COCl→RC6H5CHO+HCl\mathrm{C_6H_5COCl \xrightarrow{R} C_6H_5CHO + HCl}

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  5. Question 5

    Chemical Kinetics. Asked 3 times: 19 Apr 2025 S1*, 17 Apr 2026 S2*, 18 Apr 2026 S1 (* = numbers or wording changed that year) See all 3 times it was asked

    27
    In a first order reaction 20 millimole of reactant is lowered to 10 millimole in 0.30100.3010 minute. Find rate constant of the reaction?

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