Name the gas evolved in each of the following cases:
Sulphide salt is treated with aqueous sulphuric acid.
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Explanation:
Gases evolved in the given reactions : i) When iron sulphide is treated with aqueous sulphuric acid, hydrogen suplhide (H₂S) gas is evolved with a smell of rotten eggs. (ii) When calcium metal is added into water, hydrogen gas is evolved.
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