1.

How will you distinguish between (i) magnesium and calcium (ii) Na_(2)SO_(4) and BaSO_(4)

Answer»

Solution :(i) Calcium when heated imparts brick RED colour to the flame but MAGNESIUM does not .
(ii) `Na_(2)SO_(4)` is SOLUBLE in water but `BaSO_(4)` is insoluble .


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