Given, The enthalpy of hydrogenation of these compounds will be in...

Given,

The enthalpy of hydrogenation of these compounds will be in the order as:

Options

A $I > II > III$
B $III > II > I$
C $II > III > I$
D $II > I > III$

Correct answer

B. $III > II > I$

Step-by-step solution

Enthalpy of hydrogenation is inversely proportional to stability of alkene.

Given, The enthalpy of hydrogenation of these compounds will be in the order as:

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