Concept:Calorific value is the heat energy produced by burning 1 kg of fuel. It is measured in kJ/kg.
Explanation:From the standard calorific values (in kJ/kg):
Kerosene = 45,000; Coal = 25,000–33,000 → Kerosene > Coal. So statement A is correct.
Coal = 25,000–33,000; Wood = 17,000–22,000 → Coal > Wood. So statement B is correct.
Biogas = 35,000–40,000; LPG = 55,000 → Biogas is less than LPG. So statement C is incorrect because it claims Biogas > LPG.
CNG = 50,000; Diesel = 45,000 → CNG > Diesel. So statement D is correct.
Thus, only statement C is false.
Answer:The incorrect statement is C.