Question

Which of the following cannot undergo a $E2$ reaction?
(A)

(B)

(C)

(D) None of these

Answer 1

Hint: In this question we have to find that which of the above given option didn’t perform elimination reaction. For finding the option which didn’t perform elimination reaction we have to know all the terms which help us to know how a elimination reaction perform that we are going to study in the solution.

Complete Step by Step Solution:
As we know that, in the options there are three types of alkyl halides are given and we also know that if any compound having halogen and hydrogen atom on their $\beta - carbon$ atom then that compound can form elimination reaction.
So, we have to see that which of the above compound does not have a $\beta - carbon$ atom by which we can say that reaction will not perform elimination reaction,
So, by doing further reaction we get that,
In the (C) option there is an absence of hydrogen atom in $\beta - carbon$ by which we can say, that the compound cannot perform an elimination reaction.
Therefore, we can say that option (C) cannot undergo a $E2$ reaction.
Hence, the correct option is (C).

Note: This question is taken from Haloalkanes and Haloarenes. So, let’s we know that what are haloalkanes and haloarenes. Haloalkanes are those which contains alkanes with having halogens as in their substituents and in Haloarenes are those when any hydrogen atom is bonded to the benzene ring and got replaced by the halogen atoms and the compound which form from the whole reaction the compound is called as by the name of Haloarenes.