Question

Use the following information to answer the next question.

4.120 kg of fuel was burnt to produce 178000 kJ of energy.
The calorific value (in KJ/kg) of the fuel is

• A. $43203$
• B. $4320.3$
• C. $432.03$
• D. $43.203$

Answer 1

The correct option is A $43203$

Calorific value of a fuel is the amount of heat produced by burning one kg of that fuel completely.
It is given that 4.120 kg of fuel on combustion produces 178000 kJ of heat. Hence, 1 kg of fuel on combustion will produce

= $178000/4.120$ kJ of heat
= 43203.8834 kJ
Therefore, calorific value of the fuel is 4.3203 x ${10}^4$kJ/kg
The correct answer is option 'a'