Which of the following alkenes undergoes ozonolysis to give a mixture of ketones only?

(a)
(b)
(c)
(d)


1. (c) Only
2. (c) and (d)
3. (a) and (d)
4. (d) only

Hint: Look for alkene where both carbons of the double bond are attached to alkyl groups (not hydrogen).

Seek an alkene where both carbons of the double bond are attached to alkyl groups (not hydrogen).


(3,4)
Alkenes which have two substituents on each carbon atom of the double bond, give mixture of ketones on ozonolysis. Thus, option (3) and (4) give mixture of ketones.

On the other hand, alkenes (a) and (b) give a mixture of two aldehydes.