Match List I with List IIList I (Ion): A. Co^2+ B. Mg^2+ C. Pb^2+ D. Al^3+List II (Group Number in Cation Analysis): I. Group-I II. Group-III III. Group-IV IV. Group-VIChoose the correct answer from the options given below :

1. A-III, B-IV, C-II, D-I

2. A-III, B-IV, C-I, D-II

3. A-III, B-II, C-IV, D-I

4. A-III, B-II, C-I, D-IV

Doubtly Asked 30 Oct 2026 NEET UG 2025 neet Save WhatsApp Report

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Answer: 2. A-III, B-IV, C-I, D-II

Key idea: recall the group of each cation in qualitative analysis.

\(\mathrm{Pb^{2+}}\): Group I (precipitated as chloride with dilute HCl).
\(\mathrm{Al^{3+}}\): Group III (hydroxide with \(\mathrm{NH_4OH}\)).
\(\mathrm{Co^{2+}}\): Group IV (sulphide in basic medium with \(\mathrm{H_2S}\)).
\(\mathrm{Mg^{2+}}\): Group VI (phosphate with \(\mathrm{(NH_4)_2HPO_4}\)).

So A-III, B-IV, C-I, D-II: option (2).

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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