Question

Sodium amide $(NaN{H}_2)$ , commonly called sodamide, is used in the industrial production of which of the following $?$
 $A)$ Indigo
 $B)$ Hydrazine
 $C)$ Sodium cyanide
 $D)$ All the above

Answer 1

Hint :It is a salt composed of the sodium cation and the azanide anion. This strong, which is perilously responsive toward water, is white, yet business tests are normally dim because of the presence of little amounts of metallic iron from the manufacturing process.

Complete Step By Step Answer:
In the industrial production of indigo, sodium amide is a component of the highly basic mixture that induces cyclisation of $N-$ phenyl glycine. The reaction produces ammonia, which is recycled typically.
Sodium amide is mainly used as a strong base in organic chemistry, often in liquid ammonia solution. It is the reagent of choice for the drying of ammonia.
It is however poorly soluble in solvents other than ammonia. Its use has been superseded by the related reagents sodium hydride, sodium bis amide, and lithium diisopropyl amide
 $Na-N{H}_2$ gives $-N{H}_2$ nucleophile easily which is used for the production of indigo containing hydroxylamine $N{H}_2-OH$ , hydrazine, $N{H}_2-N{H}_2$ , soda cyanide, $NaCN$
So, the correct answer is $A)$ Indigo.

Note :
Sodium amide responds violently with water to deliver smelling salts and sodium hydroxide and will be consumed in air to give oxides of sodium and nitrogen dioxide. It is highly corrosive to eyes, skin and mucous membranes. Within the sight of restricted amounts of air and dampness, for example, in an inadequately shut compartment, dangerous combinations of peroxides may form. This is joined by a yellowing or browning of the strong.