Question

Calorific value and ignition temperature of fuel X are 75 kJ/g and 20°C respectively. These values for fuel Y are 50 kj/g and 75°C respectively. On burning, the fuel Y produces only CO₂while fuel X produces CO₂ and CO. Which of the two is a better fuel? Give two reasons to support your answer.

Answer 1

Fuel Y is the better fuel for the following reasons.
    (a) It has a moderate ignition temperature of 75°C, i.e., neither too high nor too low.
    (b) It does not produce harmful gases such as carbon monoxide (CO).