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The rate of a catalysed reaction at 27^(...

The rate of a catalysed reaction at `27^(@)C` is `e^(2)` times the rate of uncatalysed reaction at `727^(@)C`. If the catalyst decreased the activation energy by 6 Kcal/mol, the activation energy of uncatalysed reaction is (consider the same value of pre-exponential factors in both cases):

A

`48/7` Kcal/mol

B

`6/7` Kcal/mol

C

`90/7` Kcal/mol

D

6 Kcal/mol

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The correct Answer is:
A
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