MCQ
Yellow ammonium sulphide can separate:
- ACdS and As2S3
- BBi2S3 and CuS
- CPbS and Bi2S3
- DHgS and PbS
✓
Answer
- CdS and As2S3
Explanation:
Since CdS belongs to IIA group and As2S3 belongs to IIB group, they can be separated with yellow ammonium sulphide as only IIB group sulphides dissolve in yellow ammoium sulphide.
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