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A salt is heated first with dil. H2SO4 and then with conc. H2SO4 No reaction takes place. It may be 

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A salt is heated first with dil. H2SO4 and then with conc. H2SO4 No reaction takes place. It may be 

(a) Nitrate

(b) Sulphide

(c) Oxalate

(d) Sulphate

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1 Answer

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Correct option is (d) Sulphate

The salt must have \(SO^{2-} _4\) group which is also present in the acid so reaction does not take place.

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