As oxygen is ______ soluble in water. Air dissolved in water contains a higher percentage of oxygen (30-35%) than ordinary air (21%).

less

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not

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none of these

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Solution

The correct option is B more
Air dissolved in water contains higher percentage of oxygen because solubility of oxygen gas is more than nitrogen and other gases present in ordinary air. Since the size of oxygen molecules is such that it gets trapped in the vacant space of water molecules (formed due to hydrogen bonding).
Therefore option B is correct

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