Aqueous solution of the following compounds are electrolysed . Acetylene gas is obtained from

Acetylene is obtained from CaC_2

Aqueous solution of an organic compound 'A' on electrolysis liberates acetylene and CO_(2) at anode. 'A' is

When aqueous solution of sodium hydroxide is electrolysed ?

When an aqueous solution of sodium propionate is electrolysed the gas liberated at anode is/are

When an aqueous solution of sodium propionate is electrolysed the gas liberated at anode is/are

When conc . Aqueous solution of potassium acetate is electrolysed we get