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Water is used in hot water bags because
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- It is easily obtained
- It is cheaper and is not harmful
- It has high specific heat
- It is easy to heat water
- It is easily obtained
Correct Option: C
The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius. The specific heat of water is 1 calorie/gram °C = 4.186 joule/gram °C which is higher than any other common substance. As a result, water plays a very important role in temperature regulation
