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The rate of an exothermic reactions incr...

The rate of an exothermic reactions increases with increase in temperature.

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False. The rate of an exothermic reaction decreases with increasing temperature. For endothermic reaction, the value of K increases with increase in temperature and vice versa. For exothermic reaction, the value of K deacreases with increase in temperature and vice versa.
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The rate constant of a reaction increases linearly with increase in temperature.

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Assertion : Rate of reaction increases with increase in temperature. Reason : Number of effective collisions increases with increase in temperature.

The rate of reaction increases with increase in activation energy.

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