Analytical ChemistryHard
Question
Compound (X) when heated with KOH solution it produce colorless poisonous gas (Y) having rotten fish smell and solution (Z).
CuSO4(sol.) 
Black ppt (P1)
CuSO4(sol.) 
White ppt (P2) + Orange yellow solution (S).
Select the correct statements :-
Options
A.Gas (Y) is hydrogen sulphide
B.Oxidation number of metal is +1 in white ppt (P2)
C.Compound (X) contain NH4+ ion
D.Orange yellow solution (S) is decolourised on addition of sodium thiosulphate
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