An aqueous solution of a metal salt, M, gives a white pre...
An aqueous solution of a metal salt, M, gives a white precipitate with NaOH which dissolves in excess NaOH. With aqueous ammonia, the solution of M also gives a white precipitate which dissolves in excess ammonia. Therefore cartion in M is
Zn ++
Ca++
Ai+++
Pb++
Cu++
Correct answer is A
No explanation has been provided for this answer.
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