1.
For a cyclic thermodynamic process, the change in internal energy is
2.
An ideal gas expands isothermally. During this process,
3.
In an adiabatic expansion of an ideal gas,
4.
A gas absorbs 800 J of heat and does 500 J of work. The increase in internal energy is
5.
The efficiency of a heat engine is
6.
The efficiency of all real heat engines is
7.
Which of the following is impossible according to the Second Law of Thermodynamics?
8.
The coefficient of performance (COP) of a refrigerator is usually
9.
The area enclosed by a closed P–V curve represents
10.
The Carnot engine has maximum efficiency because it works
11.
A gas undergoes an isochoric process. The work done is
12.
For an ideal gas, the internal energy depends upon
13.
If the sink temperature of a Carnot engine decreases while the source temperature remains constant, its efficiency
14.
The work done during expansion of a gas is
15.
Which law introduces the concept of entropy?
16.
A perfect heat engine converting all heat into work would violate
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