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If, in an ammonical solution, salts whic...

If, in an ammonical solution, salts which produce a black precipate when `H_2S` is passed through themselves, may be :

A

A nickel salt

B

A mercury salt

C

A cobalt salt

D

A lead saltc

Text Solution

Verified by Experts

The correct Answer is:
A, C, D
Ammonical `H_2S` soution can precipitate IV group radicals
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