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Decreasing order of rate of reaction of ...

Decreasing order of rate of reaction of molecules towards electrophilic addition reaction is:

A

`a gt b gt c gt d`

B

`b gt c gt a gt d`

C

`d gt b gt c gt a`

D

`b gt d gt c gt a`

Text Solution

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The correct Answer is:
C
Rate determining step is formation of carbocation.

(most stable ) because of `(+R)of NH_(2)`
(a) is latest due to `(-R) of - NO_(2)`
(b) `+R(-OH)`
(c) `-CH_(3)` (hyperconjunction)
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