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Conjugate acid or conjugate base of a given species

This type of question, asked 7 times: 11 May 2023 S2, 15 May 2023 S1, 15 Apr 2026 S2, 18 Apr 2026 S1, 12 May 2026 S2, 13 May 2026 S1, 15 May 2026 S2. All 7 questions below, oldest first.

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  1. Question 1

    11 May 2023 S2

    82
    Which among the following is the conjugate base of HClO4\text{HClO}_4?

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  2. Question 2

    15 May 2023 S1

    69
    Conjugate acid of NH2−NH_{2}^{-}and NH3NH_{3} are respectively

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  3. Question 3

    15 Apr 2026 S2

    12
    Identify from following the conjugate base of [Zn(H2O)4]2+[\mathrm{Zn(H_2O)_4}]^{2+}

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  4. Question 4

    18 Apr 2026 S1

    13
    Identify the conjugate bases of H3PO3\mathrm{H_3PO_3} and H2SO4\mathrm{H_2SO_4} respectively from following.

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  5. Question 5

    12 May 2026 S2

    10
    Identify the conjugate acid of NH3\mathrm{NH_3} from following.

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  6. Question 6

    13 May 2026 S1

    10
    Identify conjugate bases of HCO3−\mathrm{HCO_3^-} and HS−\mathrm{HS^-} respectively.

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  7. Question 7

    15 May 2026 S2

    11
    Identify the conjugate base of NH3\mathrm{NH_3} from following.

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