The density of most of the substances __ with the increase in temperature and _ with decrease in temperature.

Decrease, increase

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Increase, increase

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Increase, decrease

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Decrease, decrease

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Solution

The correct option is A Decrease, increase
The density of most of the substances decreases with the increase in temperature and increases with decrease in temperature. But water contracts when cooled up to $40^{o} C$ but expands when cooled further below $40^{o} C$ . Thus the density of water is maximum at $40^{o} C$ .

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The density of most of the substances ______ with the increase in temperature and _____ with decrease in temperature.

The density of most of the substances __ with the increase in temperature and _ with decrease in temperature.