GENERAL KNOWLEDGE

Detailed explanation-1: -Air is a homogeneous mixture of the gaseous substances nitrogen, oxygen, and smaller amounts of other substances. Air is a mixture of different gasses like N2 (78%), O2(21%), argon (1%), carbon CO2 (0.03%), and water vapor. The composition of these gasses is not fixed.

Detailed explanation-2: -Despite the fact that air is a mixture of several gases, it is a homogeneous mixture since it seems uniform everywhere and its constituents are difficult to detect. Furthermore, simple mechanical methods are unable to separate distinct components of air.

Detailed explanation-3: -Air is mostly gas It’s a mixture of different gases. The air in Earth’s atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of other gases, too, such as carbon dioxide, neon, and hydrogen.

Detailed explanation-4: -Although air is a mixture consisting of roughly 78% of nitrogen, 21% of oxygen, and trace amounts of other gases and moisture, air is homogeneous and has distinct properties without phase changes in its composition in many thermodynamic processes. In such conditions, we can treat air as a pure substance.