1.

Dinitrogen can be purified from the impurities of NO and NH_(3) by passing through :

Answer»

concentrated `HCl`
alkaline SOLUTION of phrogallol.
an acidified SOLUTIN of potassium DICHROMATE.
an aqueous solution of `KOH`.

Solution :`K_(2)Cr_(2)O_(7)+H_(2)SO_(4)+Cr(SO_(4))_(3)+H_(2)O+[O],NO+[O]+H_(2)O toHNO_(3)(l)2NH_(3)+H_(2)SO_(4) to (NH_(4))_(2)SO_(4)`


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