<prompt> Calorific value of protein is9.3 kcalg as measured by bomb calorimeter.5.3 kcalg as measured by bomb calorimeter9.3 kcalg as measured by combustometer5.3 kcalg as measured by combustometer  <response>: Combustometer is a wrong terminology given to confuse the aspirants.A bomb calorimeter device is used to measure energy released by combustion of foodstuffs outside the body. It uses Direct Calorimetry to measure the calorific value.Calorific value of various substances as measured in a bomb calorimeter areCarbohydrate 4.1 kcalgFat 9.3 kcalgProtein is 5.3 kcalgNote: if measured inside the body carbohydrate and Fat have same as above values but protein has 4.1 kcalg 