For a certain reaction a large fraction of molecules has energy more than the threshold energy, still the rate of reaction is very slow. The possible reason for this could be thatA. the colliding molecules could be large in sizeB. the colliding molecules must not be properly oriented for effective collisionsC. the rate of reaction could be independent of the energyD. one of the reactant cound be in excess.

For a certain reaction a large fraction of molecules has energy more t

1.	For a certain reaction a large fraction of molecules has energy more than the threshold energy, still the rate of reaction is very slow. The possible reason for this could be thatA. the colliding molecules could be large in sizeB. the colliding molecules must not be properly oriented for effective collisionsC. the rate of reaction could be independent of the energyD. one of the reactant cound be in excess.
Answer» Correct Answer - B Apart from energy considerations the colliding molecules should have proper orientation for effective collisions.

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