Question

Gross calorific value of carbohydrates.

• A. 4.1 kcal/g
• B. 5.65 kcal/g
• C. 9.45 kcal/g
• D. 9.0 kcal/g

Answer 1

Answer:

A. 4.1 kcal/g

• The gross calorific value or gross energy value is defined as the amount of heat energy liberated by the complete combustion of 1g of food in a bomb calorimeter.

• A bomb calorimeter is a closed metal chamber filled with oxygen.

• The gross calorific value of protein is 5.65 kcal/g.

• 1 kcal is defined as the amount of energy required to raise the temperature of 1kg of water by 1℃.

• The gross calorific value of carbohydrates is 4.1 kcal/g.

• The gross calorific value of fats is 9.45 kcal/g.