Please explain the 20th one Ans is (4)
Q.20.


Incorrect statement
(1) Reaction requires weakly acidic medium
(2) Product shows geometrical isomerism
(3) This reaction is nucleophilic addition reaction with elimination
(4) This reaction proceed via formation of carbocation

Dear Student,

The mechanism for this reaction is shown below :



Since we can see that no carbocation is formed in the mechanism, so (4) is incorrect. 
 

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