Thermal Physics MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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Which process describes the phase change from gas directly to solid?
A. Deposition
B. Sublimation
C. Condensation
D. Melting
Answer: Deposition
The quantity of heat required to raise the temperature of 1 gram of a substance by 1°C is known as its:
A. Specific heat capacity
B. Latent heat
C. Heat capacity
D. Enthalpy
Answer: Specific heat capacity
The change in temperature when heat is added or removed from a substance is directly proportional to its:
A. Heat capacity
B. Latent heat
C. Thermal conductivity
D. Specific heat capacity
Answer: Specific heat capacity
The temperature at which a substance transitions from solid to liquid is known as:
A. Melting point
B. Freezing point
C. Boiling point
D. Sublimation point
Answer: Melting point
Which process involves heat transfer by electromagnetic waves?
A. Radiation
B. Conduction
C. Convection
D. Advection
Answer: Radiation
The rate of heat transfer through a material is known as:
A. Thermal conductivity
B. Specific heat capacity
C. Enthalpy
D. Heat capacity
Answer: Thermal conductivity
The heat absorbed or released by a substance during a phase change is known as:
A. Latent heat
B. Specific heat
C. Thermal conductivity
D. Enthalpy
Answer: Latent heat
The first law of thermodynamics is essentially a statement of the conservation of:
A. Energy
B. Momentum
C. Mass
D. Heat
Answer: Energy
In an adiabatic process, the internal energy of a system is equal to:
A. The work done by or on the system
B. The heat added to the system
C. The heat rejected by the system
D. The change in temperature of the system
Answer: The work done by or on the system