Assertion: Air dissolved in water contains a lower percentage of oxygen than contained in air.
Reason: The solubility of oxygen in water is 33%.

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Both assertion and reason are correct and the reason is the correct explanation for assertion.

Both assertion and reason are correct but the reason is not the correct explanation for the assertion.

Assertion is incorrect but reason is correct.

Both assertion and reason are incorrect.

answer is D.

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Detailed Solution

Because oxygen molecules are smaller, they become trapped inside the empty space in

H_{2} O

, increasing their solubility in water. The amount of oxygen in air that dissolves in water is more than that of air because oxygen is more soluble in water than nitrogen and other gases are. The temperature affects a gas's ability to dissolve in a liquid. Consequently, both of the claims are false.

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