Thermal Physics MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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What does the term ‘adiabatic’ refer to?
A. No heat exchange
B. Constant temperature
C. Constant pressure
D. Constant volume
Answer: No heat exchange
The Carnot engine operates between which two temperature reservoirs?
A. Hot and cold
B. Liquid and gas
C. Solid and liquid
D. Gaseous and plasma
Answer: Hot and cold
The first law of thermodynamics is also known as:
A. Law of energy conservation
B. Law of entropy
C. Law of constant pressure
D. Law of heat transfer
Answer: Law of energy conservation
Which property measures the amount of disorder or randomness in a system?
A. Entropy
B. Enthalpy
C. Specific heat
D. Temperature
Answer: Entropy
What is the heat required to convert a unit mass of a liquid into gas at constant temperature called?
A. Latent heat of vaporization
B. Latent heat of fusion
C. Specific heat
D. Enthalpy
Answer: Latent heat of vaporization
Which type of process occurs at constant temperature?
A. Isothermal process
B. Adiabatic process
C. Isochoric process
D. Isobaric process
Answer: Isothermal process
The change in temperature of a substance when heat is added is called:
A. Sensible heat
B. Latent heat
C. Specific heat
D. Thermal conductivity
Answer: Sensible heat
Which process involves heat transfer by the movement of fluid?
A. Convection
B. Conduction
C. Radiation
D. Absorption
Answer: Convection
What is the unit of thermal conductivity?
A. W/m·K
B. J/kg·K
C. Pa
D. J/s
Answer: W/m·K