Arrange the following fuels in order of increasing calorific values (keeping the fuels with lowest calorific value first):

LPG, Coal, Alcohol, Dung cakes, Diesel

The calorific values of five fuels A, B, C, D and E are given below:

(A) 48 kJ/g

(B) 17 kJ/g

(C) 150 kJ/g

(D) 50 kJ/g

(E) 30kJ/g

Which of the fuels could be: (i) cooking gas (ii) alcohol (iii) wood (iv) hydrogen (v) kerosene ?

Arrange the following fuels in the order of decreasing calorific values (keeping the fuels with highest calorific value first):

Biogas, Kerosene, Wood, Petrol, Hydrogen gas, Methane

Most of the fuels contain carbon as one of the constituents. Name a fuel which has very high calorific value but does not contain carbon.

Name the product of petroleum that is used to drive heavy vehicles.