HUMAN NUTRITION

Detailed explanation-1: -Hence the heat required to increase 1° Celsius temperature of one-kilogram water is 1000 calorie.

Detailed explanation-2: -1 calorie is the heat required to raise the temperature of 1 gram of water by 1 degree Celsius. (Warning: the food Calorie, with a capital C, is 1000 calories, it’s the heat to raise one kilogram of water one degree C. It’s sometimes written kilocalorie, abbreviated kCal.)

Detailed explanation-3: -The calorie was originally defined as the amount of heat required at a pressure of 1 standard atmosphere to raise the temperature of 1 gram of water 1° Celsius. Since 1925 this calorie has been defined in terms of the joule, the definition since 1948 being that one calorie is equal to approximately 4.2 joules.