The Sulphide which is insoluble in dilute hydrochloric acid is

  • A FeS
  • B CuS
  • C ZnS
  • D Na2S

The correct answer is B. CuS

Sulphides like PbS (lead (II) sulphide) and CuS (copper (II) sulphide) are insoluble in acidified solutions.

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