Given below are certain cations. Using inorganic qualitative analysis, arrange them in increasing group number from 0 to VI.A. Al^3+ B. Cu^2+ C. Ba^2+ D. Co^2+ E. Mg^2+Choose the correct answer from the options given below:

1. E, A, B, C, D

2. B, A, D, C, E

3. B, C, A, D, E

4. E, C, D, B, A

Doubtly Asked 30 Oct 2026 NEET UG 2024 neet Save WhatsApp Report

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Best answer

Answer: 2. B, A, D, C, E

Key idea: group numbers in qualitative analysis.

\(\mathrm{Cu^{2+}}\): Group II (\(\mathrm{H_2S}\) in acid).
\(\mathrm{Al^{3+}}\): Group III (\(\mathrm{NH_4OH}\)).
\(\mathrm{Co^{2+}}\): Group IV (\(\mathrm{H_2S}\) in alkaline medium).
\(\mathrm{Ba^{2+}}\): Group V (\(\mathrm{(NH_4)_2CO_3}\)).
\(\mathrm{Mg^{2+}}\): Group VI.

Order B, A, D, C, E: option 2.

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

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