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Day 42: MHT-CET Chemistry

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

  1. Question 1

    Chemical Thermodynamics and Energetics. This type asked 6 times: May 2021 S1, 2 May 2023 S2, 3 May 2023 S2, 11 Apr 2026 S1, 11 Apr 2026 S2, 13 Apr 2026 S1. This one: 13 Apr 2026 S1 See all 6 of this type

    8
    Calculate the enthalpy change of the reaction, H2(g)+Cl2(g)→2HCl(g)\mathrm{H_2(g) + Cl_2(g) \rightarrow 2HCl(g)} if bond energies (kJ mol−1\mathrm{mol^{-1}}): H-H = 436, Cl-Cl = 242, H-Cl = 431

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  2. Question 2

    Halogen Derivatives of Alkanes. This type asked 6 times: 4 May 2023 S1, 15 May 2023 S1, 16 May 2023 S1, 16 May 2023 S2, 12 May 2024 S1, 26 Apr 2025 S1. This one: 26 Apr 2025 S1 See all 6 of this type

    87
    Which of the following compounds does not exhibit optical isomerism?

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  3. Question 3

    Chemical Bonding and Molecular Structure. This type asked 6 times: May 2021 S1, May 2022 S1, 3 May 2023 S2, 9 May 2023 S2, 15 May 2023 S1, 10 May 2024 S1. This one: 10 May 2024 S1 See all 6 of this type

    91
    Identify the molecule that does NOT involve sp3^3 hybridization.

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  4. Question 4

    Solutions and Colligative Properties. Asked 5 times: 3 May 2023 S1*, 4 May 2023 S1*, 14 May 2024 S2*, 25 Apr 2025 S1*, 19 May 2026 S1 (* = numbers or wording changed that year) See all 5 times it was asked

    25
    A solution containing 0.60.6 g nonelectrolyte solute in 3030 g water freezes at −0.6 ∘C-0.6\ ^\circ\mathrm{C}. Calculate the molar mass of solute if cryoscopic constant of water is 1.8 K kg mol−11.8\ \mathrm{K\ kg\ mol^{-1}}.

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  5. Question 5

    Structure of Atom. Asked 5 times: 9 May 2024 S1*, 9 May 2024 S2*, 13 May 2024 S2*, 19 Apr 2025 S2*, 14 May 2026 S2 (* = numbers or wording changed that year) See all 5 times it was asked

    2
    What is the wavelength of the photon emitted during the transition from the orbit of n=4n = 4 to that of n=2n = 2 in hydrogen atom?

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