The energy produced by 1gm carbohydrate is

The energy produced by 1gm carbohydrate is 4.2 kcal.

• On the basis of their functions, we can classify nutrients as energy-giving, body-building and nutrients that resist diseases.
• Fats and carbohydrates can both classify as energy-giving foods.
• Sugars and starches are simple carbohydrates and complex carbohydrates respectively. Both sugar and starch get digested in our digestion system and converted into glucose which ultimately breaks down to generate energy.
• The energy produced by one gram of carbohydrates is approx 4.2 kcal.
• One gram of fat produces around 9 kcal.
• One gram of fat provides more energy than one gram of carbohydrate.

Hence, option B is the correct answer.