Anthracite has the highest calorific value. and South African coal is best in the world.
The heat of combustion of sucrose is 3840 kJ per deg.mol and Molecular weight of sucrose is 342 mol -1.so the calorific value of sucrose is 11.228 kJ/deg.gm , provided the temperature is kept...
The calories or thermal units contained in one unit of a substance and released when the substance is burned.
hydrogen
Carbohydrates