Engineering
Chemistry
Dilute Hydrochloric Acid and Sulphuric Acid
Test of Cations and Anions
Question
Among PbS, CuS, HgS, MnS, Ag2S, NiS, CoS, Bi2S3 and SnS2, the total number of BLACK coloured sulphides is
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Solution
PbS, CuS, HgS, Ag2S, NiS, CoS, Bi2S3