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Day 15: MHT-CET Chemistry

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

  1. Question 1

    Chemical Thermodynamics and Energetics. This type asked 9 times: 20 Apr 2025 S2, 21 Apr 2025 S2, 22 Apr 2025 S1, 23 Apr 2025 S1, 26 Apr 2025 S2, 17 Apr 2026 S2, 18 Apr 2026 S2, 15 May 2026 S2, 19 May 2026 S2. This one: 19 May 2026 S2 See all 9 of this type

    7
    Evaluate the standard enthalpy of formation of C2H4\mathrm{C_2H_4} in kJ/mol from the following data, C2H4(g)+3O2(g)→2CO2(g)+2H2O(l)\mathrm{C_2H_{4(g)} + 3O_{2(g)} \to 2CO_{2(g)} + 2H_2O_{(l)}} ΔrH0=−1411\Delta_r H^0 = -1411 kJ/mol ΔfH0(CO2)=−393\Delta_f H^0(\mathrm{CO_2}) = -393 kJ/mol ΔfH0(H2O)=−285\Delta_f H^0(\mathrm{H_2O}) = -285 kJ/mol

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  2. Question 2

    Amines. This type asked 9 times: May 2022 S1, 20 Apr 2025 S1, 21 Apr 2025 S1, 21 Apr 2025 S2, 11 Apr 2026 S2, 13 Apr 2026 S2, 16 Apr 2026 S1, 16 Apr 2026 S2, 19 May 2026 S1. This one: 19 May 2026 S1 See all 9 of this type

    41
    Identify the products formed when benzenediazonium chloride reacts with CuCl / HCl C6H5N2+Cl−+CuCl→\mathrm{C_6H_5N_2^+Cl^- + CuCl \rightarrow}

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  3. Question 3

    Solutions and Colligative Properties. This type asked 9 times: 9 May 2023 S1, 10 May 2024 S2, 11 May 2024 S2, 12 May 2024 S1, 20 Apr 2025 S1, 22 Apr 2025 S1, 16 Apr 2026 S2, 20 Apr 2026 S2, 19 May 2026 S1. This one: 19 May 2026 S1 See all 9 of this type

    26
    Calculate the osmotic pressure of a solution containing 3.423.42 g of fructose (molar mass = 180180 g/mol) in 1 litre of water at 400400 K.

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  4. Question 4

    Solutions and Colligative Properties. This type asked 9 times: 3 May 2023 S2, 10 May 2024 S1, 11 May 2024 S1, 14 May 2024 S1, 21 Apr 2025 S2, 16 Apr 2026 S1, 20 Apr 2026 S1, 12 May 2026 S2, 15 May 2026 S2. This one: 15 May 2026 S2 See all 9 of this type

    21
    Calculate the boiling point elevation of an aqueous solution containing 0.50.5 g glucose in 2020 g water if KbK_b for water is 0.52 K kg mol−10.52\ \mathrm{K\ kg\ mol^{-1}}. [Molar mass of glucose =180 g mol−1= 180\ \mathrm{g\ mol^{-1}}]

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  5. Question 5

    Electrochemistry. This type asked 9 times: May 2022 S1, 3 May 2023 S2, 12 May 2024 S2, 13 May 2024 S2, 14 May 2024 S1, 25 Apr 2025 S2, 19 Apr 2026 S2, 14 May 2026 S1, 15 May 2026 S1. This one: 15 May 2026 S1 See all 9 of this type

    25
    Which of the following is the correct expression for molar conductivity of Na2SO4\mathrm{Na_2SO_4} at infinite dilution?

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