Which one of the following is manufactured by the electrolysis of fused sodium chloride?

Which is an incorrect statement?

The chloride of an element $A$ gives a neutral solution in water. In the periodic table,the element $A$ belongs to

Identify the products $A, B, C, D$ in the reactions given below:
$(X) \ NaCl \xrightarrow{\text{Aq. Electrolysis}} A + B(g) + Cl_2$
$A + Al \rightarrow NaAlO_2 + B(g)$
$(Y) \ A + Cl_2 \rightarrow C + D + H_2O$

$A$ metal $M$ reacts with nitrogen gas to afford $M_3N$. $M_3N$ on heating at high temperature gives back $M$ and on reaction with water produces a gas $B$. Gas $B$ reacts with aqueous solution of $CuSO_4$ to form a deep blue compound. $M$ and $B$ respectively are

Match the following:

Compound	Uses
$1$. Soda ash	$a$. In purification of sugar
$2$. Calcium oxide	$b$. As an antacid
$3$. Baking soda	$c$. In paper and textile industries
	$d$. To prepare pure fats and oils