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Ionic Equilibria

MHT-CET Chemistry. Try each one first, then open its answer.

Top 10 MHT-CET PYQs to practise first

The questions and kinds of question asked most often come first. Each one says how often and in which papers.

  1. Question 1

    This type asked 26 times: 6 in 2023, 6 in 2024, 7 in 2025, 7 in 2026. This one: 15 May 2026 S1 See all 26 of this type

    10
    If the dissociation constant of NH4OH\mathrm{NH_4OH} is 1.8×10−51.8 \times 10^{-5}, calculate its degree of dissociation in 0.010.01 M.

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  2. Question 2

    This type asked 20 times: 1 in 2021, 3 in 2023, 4 in 2024, 6 in 2025, 6 in 2026. This one: 19 May 2026 S2 See all 20 of this type

    10
    The solubility product of a sparingly soluble salt BA2\mathrm{BA_2} is 1.08×10−101.08 \times 10^{-10}. Calculate its solubility in g dm−3\mathrm{dm^{-3}} if the molar mass of salt is 175 g mol−1175\ \mathrm{g\ mol^{-1}}.

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  3. Question 3

    This type asked 19 times: 1 in 2022, 2 in 2023, 4 in 2024, 7 in 2025, 5 in 2026. This one: 19 May 2026 S1 See all 19 of this type

    11
    Which of the following salts does not undergo hydrolysis?

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  4. Question 4

    This type asked 16 times: 6 in 2023, 4 in 2024, 2 in 2025, 4 in 2026. This one: 19 May 2026 S2 See all 16 of this type

    9
    What is the pH of a mixture of 4040 ml of 0.10.1 M Ba(HCOO)2\mathrm{Ba(HCOO)_2} and 2020 ml of 0.10.1 M HCOOH\mathrm{HCOOH} solution? (pKapK_a for formic acid =5= 5)

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  5. Question 5

    This type asked 16 times: 4 in 2023, 1 in 2024, 5 in 2025, 6 in 2026. This one: 12 May 2026 S2 See all 16 of this type

    8
    The solubility of sparingly soluble salt BABA in water is 1.2×10−51.2 \times 10^{-5} mol dm−3^{-3}. Find its solubility product.

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  6. Question 6

    This type asked 15 times: 3 May 2023 S2, 9 May 2023 S1, 11 May 2023 S2, 15 May 2023 S2, 16 May 2023 S1, 11 May 2024 S1, 11 May 2024 S2, 14 May 2024 S1, 20 Apr 2025 S2, 11 Apr 2026 S2, 15 Apr 2026 S2, 18 Apr 2026 S1, 20 Apr 2026 S1, 20 Apr 2026 S2, 14 May 2026 S1. This one: 14 May 2026 S1 See all 15 of this type

    9
    What is the pOH of 0.0020.002 M strong monoprotic acid?

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  7. Question 7

    Asked 14 times: May 2021 S1*, 9 May 2023 S2*, 10 May 2023 S1*, 16 May 2023 S1*, 10 May 2024 S2*, 12 May 2024 S2*, 19 Apr 2025 S1*, 22 Apr 2025 S2*, 26 Apr 2025 S1*, 11 Apr 2026 S2*, 16 Apr 2026 S1*, 17 Apr 2026 S1*, 13 May 2026 S1*, 15 May 2026 S2 (* = numbers or wording changed that year) See all 14 times it was asked

    10
    Calculate the solubility in g/L of sparingly soluble salt BABA if solubility product is 5.2×10−135.2 \times 10^{-13} (molar mass BA=188BA = 188 g/mol).

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  8. Question 8

    Asked 13 times: 10 May 2023 S2*, 11 May 2023 S1*, 10 May 2024 S1*, 11 May 2024 S2*, 14 May 2024 S1*, 21 Apr 2025 S2*, 22 Apr 2025 S1*, 22 Apr 2025 S2*, 23 Apr 2025 S1*, 25 Apr 2025 S1*, 25 Apr 2025 S2*, 12 May 2026 S2*, 14 May 2026 S2 (* = numbers or wording changed that year) See all 13 times it was asked

    9
    Calculate the dissociation constant of weak monobasic acid if it dissociates to 0.04%0.04\% in 0.20.2 M solution.

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  9. Question 9

    This type asked 12 times: 4 May 2023 S2, 9 May 2024 S2, 10 May 2024 S1, 11 May 2024 S1, 13 May 2024 S2, 19 Apr 2025 S1, 19 Apr 2025 S2, 13 Apr 2026 S2, 19 Apr 2026 S1, 19 Apr 2026 S2, 20 Apr 2026 S2, 12 May 2026 S1. This one: 12 May 2026 S1 See all 12 of this type

    10
    What is the POH\mathrm{P^{OH}} of solution having [H3O+] 1×10−4[\mathrm{H_3O^+}]\ 1 \times 10^{-4} at 298298 K?

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  10. Question 10

    Asked 9 times: 3 May 2023 S1*, 4 May 2023 S1*, 9 May 2023 S2*, 9 May 2024 S1*, 10 May 2024 S2*, 12 May 2024 S1*, 12 May 2024 S2*, 19 Apr 2025 S2*, 20 Apr 2025 S1 (* = numbers or wording changed that year) See all 9 times it was asked

    81
    What is the pH of buffer solution formed by mixing 0.01 M acetic acid and 0.05 M sodium acetate? (pKa=4.7447)\left( pK_{a}= 4.7447 \right)

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