Calorific values of a few fuels are given in the table.
Fuels P, Q, R, S and T can be best represented by
A Wood, kerosene, hydrogen, cowdung cakes and petrol
B Cowdung cakes, methane, hydrogen, wood and petrol
C Hydrogen, petrol, kerosene, cowdung cakes and wood
D None of these.
Wrong!! Because Hydrogen has highest calorific value.Please rectify!