1)

The order of stability of the following carbocations

                     +                                     +  

$CH_{2}=CH-CH_{2}(I); CH_{3}-CH_{2}-CH_{2}$ (II);

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A) III >II>I

B) II > III > I

C) I >II > III

D) III >I > II

Answer:

Option D

Explanation:

 The order of stability  pf carbocation will be

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