A nonmetal 'X' is an important constituent of all living organisms and it forms two oxides Y and Z which are gases. Y is toxic while Z is responsible for global warming. Identify X, Y and Z.

Explanation

i.Carbon is an important constituent of all living organisms. So, the given nonmetal 'X' is carbon.
ii. Carbon forms two oxides viz., carbon monoxide and carbon dioxide. Carbon monoxide is toxic, hence given oxide Y is carbon monoxide.
iii. Carbon dioxide causes global warming, hence given oxide Z is carbon dioxide.
Hence, X `rArr` Carbon, Y `rArr` Carbon monoxide, Z `rArr` Carbon dioxide