The bar graph given above shows the composition of the inhaled air in humans. A person is standing in an open field. Write the number of the correct bar of the inhaled air by that person.

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Solution

The correct option is B 2
The proportion of gases in atmosphere is $O_{2} : 20.8 %, N_{2} : 79 %, a n d C O_{2} : 0.03 %$ . The second bar is representing the most appropriate proportion of gases in atmosphere, which the person inhales.

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21 % O_{2}

0.03 % C O_{2}

16 % O_{2}

4.03 % C O_{2}

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O_{2}

C O_{2}

37^{\circ} C

1.00 b a r

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