Question

Nitrogen gas is absorbed by:
A.Aluminium carbide
B.Calcium carbide
C.Ferrous sulphate
D.Calcium hydroxide

Answer 1

There are various gases in the atmosphere. Nitrogen is a colorless, odorless and tasteless gas that makes $78\%$ of the air we breathe. Nitrogen gas dissolved at low and high temperature. It reacts with another compound and dissolves in it. Nitrogen gas absorbed by the reaction with calcium carbide.

Complete step by step answer:
As we know that nitrogen gas is absorbed at low and high temperatures. Presence in flue gas Calcium hydroxide was used with Nitrogen gas with water Vapour.
Here, Nitrogen is absorbed by calcium hydroxide at low temperature.
Nitrogen gas is absorbed by calcium carbide at high temperature.
Here, we see the reaction between calcium carbide and nitrogen gas is given below:
$Ca{C_2} + {N_2} \to Ca{(CN)_2}$
This reaction occurs at a very high temperature and absorbs nitrogen gas.

Option (D) is the correct answer for low temperature.

Additional information:
Nitrogen gas was discovered and isolated by Scottish physician Daniel Rutherford in 1772. Nitrogen is the lightest element of group 15. The atomic number of nitrogen is 7. Nitrogen forms dinitrogen by two atoms bound at standard temperature and pressure. Nitrogen gas is important in the chemical industry. It is used to make fertilizers, nitric acid, dyes and explosives. It is used as a preservative of food. It helps by safeguarding against oxidative damage which causes the decay and breakdown that causes food to spoil.

Note:
Nitrogen gas is absorbed at both temperatures. Here we must remember that nitrogen gas is dissolved by different salts at different temperatures. Nitrogen gas is activated at the high temperature with calcium carbide and absorbed by calcium hydroxide at low temperature.