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Role of atmosphere

The life supp...

Question

The life supporting gases such as oxygen, carbon dioxide and nitrogen are chiefly concentrated in the ___.

A

troposphere

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B

exosphere

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C

ionosphere

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D

stratosphere

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Q. Which of the following gases combines with the blood and prevents it from carrying oxygen?
(a) carbon monoxide
(b) carbon dioxide
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(c) oxygen
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why can't we live without oxygen while other gases like carbon dioxide and nitrogen are present?

Q. air is a mixture of all gases like nitrogen ,oxygen ,carbon dioxide . Then why is it so that we are able to take only '''oxygen''' from all these gases ?

987 t o r r

contains nitrogen, argon, helium, and carbon dioxide gases. The partial pressure of the first three gases are

44.0 m m H g, 466 m m H g

220 m m H g

respectively.
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