1. Nitrogen can be prepared by electrolysis of an aqueous nitratesolution

   	1.	False
   	2.	True

   

1. What product(s) forms at the cathode in the electrolysis of anaqueous solution of NaF?

   	1.	Na
   	2.	O2 and H+
   	3.	F2
   	4.	H2 and OH-