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Doctors Medicines MCQs Q&A

Match the following.

Group – A Group – B
1) Nitrogen A) 21% in air
2) Oxygen B) 97% of water on earth
3) Carbon dioxide C) 78% in air
4) Fresh water D) 2% of water on earth
5) Salt water E) 0.04% in air
F) 3% of water on earth
G) 0.05% in air
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Group – A Group – B
1) Nitrogen C) 78% in air
2) Oxygen A) 21% in air
3) Carbon dioxide E) 0.04% in air
4) Fresh water F) 3% of water on earth
5) Salt water B) 97% of water on earth

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