Amount of heat required to raise the temperature of 1 g of water by 1 degree C is called 1 cal or amount of heat required to raise the temperature of 1 g of water from 14.5 degree C to 15.5 degree C is called 1 calorie. It is also called international calorie.
1 calorie = 4.2 joule
1 calorie = 4.2 joule
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