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Thermal Physics MCQsWork, Energy, and Power MCQs

Which temperature scale does not have negative values?

A. Kelvin
B. Celsius
C. Fahrenheit
D. Rankine

Answer: Kelvin

In thermodynamics, the amount of heat required to raise the temperature of a substance by 1 degree Celsius is called:

A. Specific heat
B. Latent heat
C. Thermal capacity
D. Heat of fusion

Answer: Specific heat

Which of the following is an example of a state function?

A. Entropy
B. Work
C. Heat
D. Heat capacity

Answer: Entropy

Which law relates the pressure, volume, and temperature of an ideal gas?

A. Ideal gas law
B. Boyle's law
C. Charles' law
D. Avogadro's law

Answer: Ideal gas law

What is the SI unit of heat?

A. Joule
B. Calorie
C. Watt
D. Kelvin

Answer: Joule

Which law relates the total energy of a system to its internal energy and the work done?

A. First law of thermodynamics
B. Second law of thermodynamics
C. Third law of thermodynamics
D. Boyle's law

Answer: First law of thermodynamics

What happens to the temperature of an ideal gas during an adiabatic expansion?

A. It decreases
B. It increases
C. It remains constant
D. It fluctuates

Answer: It decreases

Which of the following is an intensive property of a system?

A. Temperature
B. Volume
C. Energy
D. Mass

Answer: Temperature

The Zeroth law of thermodynamics helps define:

A. Temperature
B. Entropy
C. Heat
D. Work

Answer: Temperature