Question

The energy produced by 1g of carbohydrate is

• A. 4.8 cal
• B. 4.2 kcal
• C. 9 joules
• D. 9.2 kcal

Answer 1

The correct option is B 4.2 kcal

Carbohydrates, proteins and fats in the foods provide energy for the body functions and physical activities. They, however, do not have same energy content. The following is the energy-content by respective nutrients:
1 gram of carbohydrates- 4kcal
1 gram of protein- 4 kcal
1 gram of fats- 9 kcal

So, the correct answer is '4.2 kcal'