Question

iron sulphide does not give hydrogen gas when reacted with dilute sulphuric acid

Answer 1

FeS formed reacts with sulphuric acid to form ferrous sulphate and release hydrogendisulphide gas.

So there is no hydrogen evolved in this reaction

Answer 2

Answer:

FeS(s)+H2SO4(aq) → FeSO4(aq) + H2S(g)

Explanation:

The above double decomposition reaction occurs and hence hydrogen is not produced.