Question

The calorific value of a fuel is 40000KJ/kg. This fuel is most likely to be:
A. biogas
B. methane
C. hydrogen gas
D. liquefied petroleum gas

Answer 1

Answer:

the fuel is most likely to be liquified petroleum gas

Answer 2

A. Biogas

Explanation:

The amount of heat energy produced on complete combustion of 1 kg of a fuel is called its calorific value. The calorific value of a fuel is expressed in a unit called kilojoule per kg (kJ/kg).  

The calorific value of various fuels is as follows:

A. Biogas -- 35000-40000 kJ/kg

B. methane -- 50000 kJ/kg

C. hydrogen gas -- 150000 kJ/kg

D. liquefied petroleum gas -- 55000 kJ/kg

Option A is the answer.