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Q. Which one of the following alkenes will react faster with $ H_{2} $ under catalytic hydrogenadon conditions?
( $R =$ Alkyl substituent)

JIPMERJIPMER 2007Hydrocarbons

Solution:

Stability of alkene
$\propto \frac{1}{\text { Heat of hydrogenation of alkene }}$
Greater the number of alkyl groups attached to the doubly bonded carbon atoms, more stable is

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