Among energy values of nutrients, 9.3 calories is that of:
A
Fats
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B
Proteins
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C
Vitamins
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D
Carbohydrates
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Solution
The correct option is A Fats The calorific value of food is the amount of energy released by the complete oxidation of food. One g of fat yields 9.3 kcal (1 kcal = 4.1868 × 1000 joules); 1 g of carbohydrate yields 4.1 kcal; and 1 g of protein yields 4.1 kcal.