Which sulphides are soluble only in aqua...

Which sulphides are soluble only in aqua regia ?

A

NiS

B

CoS

C

HgS

D

all of these

Verified by Experts

The correct Answer is:

D

All sulphides are soluble in aqua regia which is a mixture of conc. HCl (3 parts) and conc. `HNO_(3)` (1 part)

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