Heat and Thermodynamics| Practice MCQs Physics for Mdcat | mosaicbro.com

Heat and Thermodynamics| Practice MCQs Physics for Mdcat

7 of 106 questions (Page 14 of 16)

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92 No entropy change is associated with:
Correct Answer: B
Explanation: Reversible adiabatic processes have no entropy change.
93 Entropy is called as “Time Arrow” because the entropy of the universe:
Correct Answer: A
Explanation: Entropy always increases, defining the direction of time.
94 Work done by an expanding gas under adiabatic condition results in:
Correct Answer: B
Explanation: Adiabatic expansion causes cooling.
95 The natural direction of heat flow between two reservoirs depend upon:
Correct Answer: C
Explanation: Heat flows from higher to lower temperature.
96 A perfect gas is that which:
Correct Answer: D
Explanation: Perfect gases obey all gas laws under all conditions.
97 The pressure of a gas is defined as:
Correct Answer: B
Explanation: Pressure is force per unit area.
98 The energy possessed by the molecules in a substance consists of:
Correct Answer: D
Explanation: Molecular energy includes all forms of motion.
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