1.

According to the Arrhenius equation,

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a HIGH ACTIVATION energy usually implies a fast reaction.
rate constant increases with increases in temperature. This is due to a greater NUMBER of collisions whose energy exceeds the activation energy.
higher the magnitude of activation energy, strongest is the temperature dependencies of the rate constant.
the pre-exponential factor is a measure of the rate at which collisions occur, irrespective of their energy.

Solution :(b,c,d) OPTIONS (b,c,d) are correct. Option (a) is WRONG because high activation energy usually implies a slow reaction.


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