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Which of the following dienes has lowest...

Which of the following dienes has lowest heat of hydrogenation?

A

`CH_(3)CH_(2)-CH=C=CH_(2)`

B

`CH_(2)=C=CH-CH_(3)`

C

`CH_(2)=CH-CH=CH_(2)`

D

`CH_(2)=CH-CH_(2)-CH=CH_(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Conjugated dienes are stablised by the delocalisation of four `pie` electron. And hence have lowest heats of hydrogenation among the various types of diences.
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