AP and TS EAMCET Medical Model Paper 4

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Question : 57 of 160

Marks: +1, -0

In the total composition of air, nitrogen & oxygen gases constitute

N – 72.09% & O – 21.94%
N – 87.2% & O – 21 %
N – 76.09% & O – 21.34%
N – 78.09% & O – 20.94%

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