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
a
Zn ++
b
Ca++
c
Ai+++
d
Pb++
e
Cu++
Explanation
Correct Option
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Discussions (4)
movicsyn
11 years ago
sure it is Zinc2+..zinc ion....because Zn2+ AL3+ Pb2+ gives a white gelatinuos ppt soluble in excess NaOH(aq) solution....while only Zn2+ is soluble in excess NH3(aq) solution and gives white ppt too.
