The calorific values of three fuels A, B and C are 33 kj/g, 48 kj/g an

1.	The calorific values of three fuels A, B and C are 33 kj/g, 48 kj/g and 150 kj/g, respectively. A is solid, B is liquid and C is a gas at room temperature. On combustion, both A and B produce carbon dioxide while C explodes forming steam. B and C leave no residue after combustion while A leaves behind some solid residue. Which one of the three fuels is the most ideal ? Give two reasons to support your answer.
Answer» Fuel B is the most ideal fuel because. (i) it leaves no residue on burning. (ii) it has high calorific value of 48 kJ/g. (iii) it does not burn explosively.

The calorific values of three fuels A, B and C are 33 kj/g, 48 kj/g and 150 kj/g, respectively. A is solid, B is liquid and C is a gas at room temperature. On combustion, both A and B produce carbon dioxide while C explodes forming steam. B and C leave no residue after combustion while A leaves behind some solid residue. Which one of the three fuels is the most ideal ? Give two reasons to support your answer.

Answer»

Fuel B is the most ideal fuel because.

(i) it leaves no residue on burning.

(ii) it has high calorific value of 48 kJ/g.

(iii) it does not burn explosively.