Thermal Physics MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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The process in which no work is done on or by the system is called:
A. Isochoric process
B. Isobaric process
C. Adiabatic process
D. Isothermal process
Answer: Isochoric process
Which of the following is a path function?
A. Work
B. Entropy
C. Temperature
D. Internal energy
Answer: Work
The process of changing a gas into a liquid is known as:
A. Condensation
B. Vaporization
C. Sublimation
D. Deposition
Answer: Condensation
What is the latent heat of vaporization of water at standard pressure?
A. 2260 kJ/kg
B. 334 kJ/kg
C. 4186 J/kg·K
D. 1000 J/kg·K
Answer: 2260 kJ/kg
Which of the following is NOT a state function?
A. Work
B. Entropy
C. Internal energy
D. Temperature
Answer: Work
Which term describes the energy required to change the temperature of a substance by 1 degree Celsius?
A. Specific heat capacity
B. Latent heat
C. Thermal conductivity
D. Enthalpy
Answer: Specific heat capacity
The heat required to convert 1 kg of solid to liquid at constant temperature is called:
A. Latent heat of fusion
B. Latent heat of vaporization
C. Specific heat
D. Thermal conductivity
Answer: Latent heat of fusion
Which of the following gases is considered a perfect gas under most conditions?
A. Helium
B. Water vapor
C. Carbon dioxide
D. Ammonia
Answer: Helium
The internal energy of an ideal gas depends only on:
A. Temperature
B. Pressure
C. Volume
D. Density
Answer: Temperature