Question

19. Which statement is NOT true about the specific heat of a substance?
A)The magnitude of specific heat depends on the nature of the substance
B)The magnitude of specific heat depends on the how the unit for measuring heat is defined
C)The magnitude of specific heat does not depend on the how the unit for measuring heat is defined

D)The unit of specific heat is calorie/gram °C.

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Answer 1

Answer:

Specific heat, the quantity of heat required to raise the temperature of one gram of a substance by one Celsius degree. The units of specific heat are usually calories or joules per gram per Celsius degree. For example, the specific heat of water is 1 calorie (or 4,186 joules) per gram per Celsius degree.

Answer 2

The correct option is- B)The magnitude of specific heat depends on the how the unit for measuring heat is defined.

• The amount of heat energy absorbed or lost by a substance to change the temperature of one gram of a substance by one degree Celsius is called the specific heat of that substance. Hence, unit of specific heat is calorie/gram °C.
• The magnitude of specific heat depends upon the amount of work done, nature of substance and the temperature.
• It does not depend on how the unit for measuring heat is defined.