(3marks questions) 1.alkali metal's are obtained by the electrolysis molten salt and not by the electrolysis of their aqueous solution explain?2.on exposure to air, sodium hydroxide become liquid and after sometime it change to white solid. explain?

(3marks questions) 1.alkali metal's are obtained by the electrolysis

1.	(3marks questions) 1.alkali metal's are obtained by the electrolysis molten salt and not by the electrolysis of their aqueous solution explain?2.on exposure to air, sodium hydroxide become liquid and after sometime it change to white solid. explain?
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