Qualitative Analysis - Result Question 45

####48. Among PbS, CuS, HgS,MnS,Ag2S,NiS,CoS,Bi2S3 and SnS2 the total number of black coloured sulphides is

(2014 Adv.)

Subjective Questions

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Answer:

Correct Answer: 48. True

Solution:

  1. From qualitative analysis of the different metal ions it is found that PbS,CuS,HgS,Ag2S,NiS,CoS are black coloured.

MnS - dirty pink/buff coloured, SnS2 - yellow coloured.

Bi2S3 - brown/black (brownish black) coloured.

Hence, correct integer is (6 or 7).



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