Which of the following components of air is present in the largest amount in the atmosphere?

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Nitrogen

Oxygen

Water vapour

Carbon dioxide

answer is A.

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Detailed Solution

Nitrogen is present in the largest amount in the atmosphere.
Air consists of a mixture of nitrogen, oxygen and carbon dioxide majorly. The proportions of these gases is 78% for nitrogen, oxygen as 21% and carbon dioxide as 1%. So the major component of air is nitrogen. This is why nitrogen is also considered as one of the building blocks of life.

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