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Atmosphere

Which of the ...

Question

Which of the following statements are correct?
I - Carbon dioxide is essential for respiration.
II – Nitrogen and carbon dioxide support burning.
III – Oxygen is essential for humans, animals and plants for breathing.
IV – Nitrogen helps in maintaining an inert atmosphere due to its high abundance in the air and low reactivity.

A

Only IV

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B

III and IV

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C

I and II

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D

I, II, III and IV

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Solution

The correct option is B III and IV

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