Q1 of 17 Page 157

Answer the following questions.

Name the constituents of air and give their proportion in

The constituents of air are:

i. Oxygen


ii. Nitrogen


iii. Water vapour


iv. Some inert gases


The proportion of each constituent:


i. Nitrogen contains 78% of air


ii. Oxygen contains 21% of air


iii. Other gases (Carbon dioxide, water vapour, inert gases) contain 1% of air.



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