The composition of air in terms of percentage of its varous components is given.(a)Identify X and Y.(b)Mention any two uses of X and Y .(c ) identify the gases present in Z.

The composition of air in terms of percentage of its varous components

1.	The composition of air in terms of percentage of its varous components is given.(a)Identify X and Y.(b)Mention any two uses of X and Y .(c ) identify the gases present in Z.
Answer» Solution :(a)X is nitrogen ANDY is oxygen. (b)(i)Nitrogen DILUTES the activity of oxygen. (ii) Nitrogen is essential for the growth of plants. (iii) Oxygen is essential for respiration. (iv) Oxygen support COMBUSTION. (c )Z CONTAINS CARBON dioxide , argon , helium , water vapour.