NEET2025Chemistry
Q.
Match List I with List II:
| List I (Ion) | List II (Group Number in Cation Analysis) |
|---|---|
| A. Co | I. Group-I |
| B. Mg | II. Group-III |
| C. Pb | III. Group-IV |
| D. Al | IV. Group-VI |
Choose the correct answer from the option given below:
- A
A-III, B-IV, C-II, D-I
- B
A-III, B-IV, C-I, D-II
- C
A-III, B-II, C-IV, D-I
- D
A-III, B-II, C-I, D-IV
Solution
In qualitative cation analysis:
Co belongs to Group IV (precipitated as sulphide in ammoniacal medium).
Mg belongs to Group VI (precipitated last with carbonate/phosphate).
Pb belongs to Group I (precipitated as chloride with dil. HCl).
Al belongs to Group III (precipitated as hydroxide with NHOH in presence of NHCl).
A-III, B-IV, C-I, D-II.
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