Subject :NSO Class : Class 8
In an experiment, 4.5 kg of a fuel was completely burnt. The heat produced was 180,000 kJ. The calorific value of the fuel is
A 180,000 kJ
B 40,000 kJ
C 40,000 kJ/kg
D 180,000 kJ/kg
Ans 1:
Class : Class 9
Exactly.
Ans 2:
Class : Class 10
Child's play though.
calorific value=heat/unit mass of the fuel burnt
=180,000/4.5
=40000 kJ/kg
it is a question from our very own NCERT TEXTBOOK.