GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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requires little energy in order to increase in temperature
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gives off a lot of energy in cooling
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absorbs little energy for a small increase in temperature
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cools at a rapid rate
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Detailed explanation-1: -It requires a lot of amount of thermal energy to change in the temperature of the water. So the specific heat of the water indicates that water absorbs a lot of energy for a small change in the temperature and gives a lot of energy when cools down. That’s why it is used in automobiles for cooling.
Detailed explanation-2: -Water has a high specific heat, meaning it takes more energy to increase the temperature of water compared to other substances. This is why water is valuable to industries and in your car’s radiator as a coolant.
Detailed explanation-3: -The specific heat capacity, or the amount of heat needed to raise the temperature of a specific substance in a specific form one degree Celsius, for water is 4.187 kJ/kgK, for ice 2.108 kJ/kgK, and for water vapor (steam) 1.996 kJ/kgK.
Detailed explanation-4: -Water has a specific heat capacity of 4.186 J/g°C, meaning that it requires 4.186 J of energy (1 calorie) to heat a gram by one degree.
Detailed explanation-5: -Assertion :Water is used as a coolant in automobile radiators as well as a heater in hot water bags. Reason: Water has high specific heat capacity.