Question

Nitrogen can be produced by:
 $ A) $ Liquefaction and fractional distillation of air
 $ B) $ Treating an aqueous solution of ammonia chloride with sodium nitrate
 $ C) $ Thermal decomposition of sodium azide
 $ D) $ Thermal decomposition of barium azide.

Answer 1

Hint: The fractional distillation involves the use of turbines and high-energy refrigeration systems. Carbon dioxide and other trace gases settle out when the temperature reaches each of their sublimation or boiling points. Some compounds break down when heated, forming two or more products from one reactant. This type of reaction is called thermal decomposition.

Complete answer:
Let’s see if all the given options are correct or not.
The liquid nitrogen and oxygen are then separated by fractional distillation. The liquefied air is passed into the bottom of a fractionating column. Just as in the columns used to separate oil fractions, the column is warmer at the bottom than it is at the top.
In simple terms, a four-step process is used: cool it, isolate the nitrogen, separate it from the air, and then collect it. Once in its liquid form, the gases can be transported in tanks, and stored in cylinders.
So, the option $ A) $ is correct.
The reaction of ammonium and nitrite ions produces a highly exothermic in situ nitrogen generation system. When ammonium chloride and sodium nitrite are used, this reaction is considered green because nitrogen and sodium chloride are the main products of the reaction.
So, option $ B) $ is also correct
The thermal decomposition of sodium azide gives dinitrogen gas.
  $ 2Na{N_3} \to 2Na + 3{N_2} $ .
So, option $ C) $ is also correct.
The thermal decomposition of barium azide gives barium and nitrogen.
 $ Ba{({N_3})_2} \to Ba + 3{N_2} $ .
Option $ D) $ is also correct.
So, all the given options are correct.

Note:
Extracting nitrogen from the air has various benefits, the raw materials in air which are readily available in all environments and locations and the energy required for generation is limited to only the air compressor power supply in mechanical generation methods.