Thermal Physics MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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The term used to describe the heat required to raise the temperature of a system without changing its pressure is:
A. Heat capacity at constant pressure
B. Heat capacity at constant volume
C. Latent heat
D. Thermal conductivity
Answer: Heat capacity at constant pressure
The concept that the heat added to a system is used to do work and change the internal energy is described by:
A. First law of thermodynamics
B. Second law of thermodynamics
C. Third law of thermodynamics
D. Zeroth law of thermodynamics
Answer: First law of thermodynamics
The heat energy required to change a substance from solid to gas without passing through the liquid phase is called:
A. Sublimation
B. Deposition
C. Condensation
D. Evaporation
Answer: Sublimation
The principle stating that energy can neither be created nor destroyed, only transformed from one form to another, is known as:
A. Law of conservation of energy
B. Law of conservation of mass
C. First law of thermodynamics
D. Zeroth law of thermodynamics
Answer: Law of conservation of energy
In thermodynamics, the term ‘work’ refers to:
A. The energy transferred by a force over a distance
B. The heat transferred in a system
C. The potential energy of a system
D. The total internal energy of a system
Answer: The energy transferred by a force over a distance
The process by which a gas turns into a liquid is called:
A. Condensation
B. Sublimation
C. Evaporation
D. Freezing
Answer: Condensation
The total energy possessed by a system due to its temperature is called:
A. Thermal energy
B. Potential energy
C. Kinetic energy
D. Internal energy
Answer: Thermal energy
The principle stating that the entropy of a perfect crystal approaches zero as the temperature approaches absolute zero is known as:
A. Third law of thermodynamics
B. Second law of thermodynamics
C. First law of thermodynamics
D. Zeroth law of thermodynamics
Answer: Third law of thermodynamics
The amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius is known as:
A. Specific heat capacity
B. Latent heat
C. Heat capacity
D. Thermal conductivity
Answer: Specific heat capacity