The heat of combustion ( kJ `"mol"^(-1)`) is highest for

Options

A. `H_(2)(g)`
B. `H_(2)(l)`
C. LPG
D. `CH_(4)(g)`

Answer

C

Explanation

The heat change when one mole of the substance is completely burnt in oxygen is called enthalpy of combustion.
LPG ( Liquefied Petroleum Gas) is mixture of propane or butane. With increase in number of C-atom heat of combustion increases. Thus, option (c) is correct.