Which cycloalkane has the lowest heat of combustion per CH_2 group? [Jamia Millia Islamia 2008]

JEE Main Chemistry question

Which cycloalkane has the lowest heat of combustion per CH group? [Jamia Millia Islamia 2008]

(A)Cyclopropane
(B)Cyclobutane
(C)Cyclopentane
(D)CyclohexaneCorrect

Answer: (D)

Solution

Heat of combustion per CH unit reflects ring strain: the more strained the ring, the higher the energy content and the higher the heat released per CH on

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Question ID VK-142325