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Laws of Thermodynamics Quiz

Practice zeroth, first, and second law applications. Ideal for students preparing board exams and competitive tests.

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Laws of Thermodynamics Quiz
QUESTION NO 01
Convection involves heat transfer by?

Answer: Bulk movement of fluid
Convection is heat carried by macroscopic motion of a fluid.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
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QUESTION NO 02
Conduction is heat transfer through?

Answer: Direct molecular contact in matter
Conduction transfers heat via particle collisions/contact within a material.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
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QUESTION NO 03
Heat engine efficiency cannot be 100% because of?

Answer: Second law of thermodynamics
The second law forbids a perfect heat engine that converts all heat to work with no other effect.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
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QUESTION NO 04
Entropy of an isolated system in a spontaneous process?

Answer: Increases or stays the same
Second law: entropy of an isolated system never decreases.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
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QUESTION NO 05
Ideal gas law is?

Answer: PV = nRT
The equation of state for an ideal gas is PV = nRT.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
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QUESTION NO 06
Latent heat is associated with?

Answer: Change of phase at constant temperature
Latent heat is energy absorbed/released during phase change at constant T.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
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QUESTION NO 07
Specific heat capacity is heat required to raise temperature of?

Answer: Unit mass by 1 degree
c = Q/(mΔT); heat per unit mass per degree.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
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QUESTION NO 08
In an adiabatic process,

Answer: No heat is exchanged
Adiabatic: Q = 0; the system does not exchange heat with surroundings.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
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QUESTION NO 09
In an isothermal process for an ideal gas,

Answer: Temperature remains constant
Isothermal means constant temperature; for ideal gas ΔU = 0.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
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QUESTION NO 10
First law of thermodynamics is essentially conservation of?

Answer: Energy
ΔU = Q − W expresses energy conservation for a thermodynamic system.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
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