Chemistry Hydrocarbon NTA Abhiyas Question - Alkanes Alkenes and Alkynes (Hydrocarbons) Single Correct MCQ
Published on: August 14, 2026

The correct order of heat of combustion for following alkadienes is

(i)

(ii)

(iii)

A
(i) < (ii) < (iii)
B
(ii) < (iii) < (i)
C
(i) < (iii) < (ii)
D
(iii) < (ii) < (i)

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Text Solution

Verified by Experts
The correct answer is:
A

(i)<(ii)<(iii)

In Isomers of Hydrocarbon heat of combustion depends upon their stability. As stability increases, heat of combustion decreases, trans-alkenes are more stable than cis-alkenes Stability

Stability a > b > c

Heat of combustion c > b > a

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