A. FeS
B. CuS
C. ZnS
D. Na2S
Correct Answer:
Option B – CuS
Explanation
Sulphides like PbS (lead (II) sulphide) and CuS (copper (II) sulphide) are insoluble in acidified solutions.
The Sulphide which is insoluble in dilute hydrochloric acid is?
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