Question

The calorific values of fats,carbohydrates and proteins vary in the order

• A. Fats > Carbohydrates = Proteins
• B. Fats > Proteins > Carbohydrates
• C. Carbohydrates > Proteins > Fats
• D. Proteins > Carbohydrates > Fats

Answer 1

The correct option is A Fats > Carbohydrates = Proteins

Calorific value is basically a $\text{measurement of energy or heat released (kJ or kcal) when 1kg of a substance}$ is completely combusted in the presence of air or oxygen.

Fats have the greatest amount of food energy $37kJ/g.$ Proteins and most carbohydrates both have about $17kJ/g.$