The salt of an alkali metal gives yellow colour in the flame test . Also its aqueous solution gives an insolublewhite precipitate with barium chloride in acid medium . The salt is

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 insolublewhite precipitate with barium chloride in acid medium . The salt is
Answer» NACL `K_(2)SO_(4)` `Na_(2)SO_(4)` `Li_(2)SO_(4)` Solution :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`