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Chapter 24 Review
Test Description: Review of Thermodynamics
Instructions: Answer all questions to get your test result.
1) A volume of air has a temperature of 0 degrees Celsius. An equal volume of air that is twice as hot has a temperature of about
A
2 degrees C.
B
273 degrees C.
C
None of the choices
D
0 degrees C.
2) The greater the difference in temperature between the input reservoir and output reservoir for a heat engine, the
A
neither...efficiency doesn\'t change
B
greater the efficiency
C
depends on other factors
D
less the efficiency.
3) When a volume of air is compressed and no heat enters or leaves, the air temperature will
A
decreases first then increases
B
decrease.
C
remain unchanged.
D
increase.
4) Two identical blocks of iron, one at 10 C and the other at 20 C, are put in contact. Suppose the cooler block cools to 5 C and the warmer block warms to 25 C. Which law would this violate?
A
none of the choices
B
second law of thermodynamics.
C
all choices
D
first law of thermodynamics.
5) Entropy measures
A
temperature as pressure increases.
B
temperature as volume increases.
C
temperature at constant pressure.
D
messiness.
6) The ideal efficiency for a heat engine operating between temperatures of 2050 K and 310 K is
A
15%
B
50%
C
85%
D
None of the choices
7) You have a jar full of marbles. When you tip the jar over, all of the marbles roll away. You wouldn't expect the marbles to spontaneously order themselves back into the jar because
A
processes in which disorderly states tend toward orderly states are improbable and simply not observ
B
processes in which orderly states tend toward disorderly states are improbable and simply not observ
C
processes in which heat energy is turned into mechanical energy are probable and commonly observed.
D
processes in which mechanical energy is turned into heat energy are probable and commonly observed.
8) Entropy is closely related to the
A
second law of thermodynamics.
B
none of the choices
C
first law of thermodynamics.
D
third law of thermodynamics
9) Convert 300 K to Celsius
A
63 Celsius
B
573 Celsius
C
273 Celsius
D
27 Celsius
10) Convert 32 degrees F to Kelvin.
A
-173 K
B
373 K
C
0 K
D
273 K
*select an answer for all questions
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