The salt of an alkali metal gives yellow colour in the flame test . Also its aqueous solution gives an insoluble white precipitate with barium chloride in acid medium . The salt isA. NaClB. `K_(2)SO_(4)`C. `Na_(2)SO_(4)`D. `Li_(2)SO_(4)`

The salt of an alkali metal gives yellow colour in the flame test . Al

1.	The salt of an alkali metal gives yellow colour in the flame test . Also its aqueous solution gives an insoluble white precipitate with barium chloride in acid medium . The salt isA. NaClB. `K_(2)SO_(4)`C. `Na_(2)SO_(4)`D. `Li_(2)SO_(4)`
Answer» Correct Answer - C Since the alkali metal salt gives a yellow colour in the flame , it must be sodium salt . Further , since the salt gives an insoluble white ppt. with `BaCl_(2)` in acidic medium , it must be sodium sulphate , `Na_(2)SO_(4)`. `Na_(2)SO_(4) + BaCl_(2) to underset("White ppt.")(BaSO_(4)) darr + 2 NaCl`

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The salt of an alkali metal gives yellow colour in the flame test . Also its aqueous solution gives an insoluble white precipitate with barium chloride in acid medium . The salt isA. NaClB. `K_(2)SO_(4)`C. `Na_(2)SO_(4)`D. `Li_(2)SO_(4)`

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