Gross calorific value and physiological value | vedclass

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Question

(B) The gross calorific value is the amount of heat energy produced from the complete combustion of $1 \ g$ of food in a bomb calorimeter (a closed me

Vedclass · Accepted Answer

$5.65, 4.0$

Vedclass · Answer

(B) The gross calorific value is the amount of heat energy produced from the complete combustion of $1 \ g$ of food in a bomb calorimeter (a closed metal chamber filled with $O_2$).For proteins,the gross calorific value is $5.65 \ kcal/g$.The physiological value is the actual amount of energy liberated in the body,which is lower than the gross calorific value because combustion in the body is not complete.For proteins,the physiological value is $4.0 \ kcal/g$.Therefore,the values are $5.65 \ kcal/g$ and $4.0 \ kcal/g$ respectively.

Gross calorific value and physiological value of proteins are $X$ and $Y$ $kcal/g$ respectively.

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