1.As a result of any natural process, the total entropy of anysystem plus that of its environment As a result of any naturalprocess, the total entropy of any system plus that of itsenvironment?

A) always stays the same. B) sometimes decreases. C) neverdecreases. D) never increases.

2.According to the second law of thermodynamics, the entropy ofany system always increases. According to the second law ofthermodynamics, the entropy of any system always increases.

A)True B)False

3. An ice cube at 0°C is placed in a very large bathtub filledwith water at 30°C and allowed to melt, causing no appreciablechange in the temperature of the bath water. Which one of thefollowing statements is true?

A)The entropy of the system (ice plus water) increases becausethe process is irreversible.

B)The entropy lost by the ice cube is equal to the entropygained by the water.

C)The net entropy change of thesystem (ice plus water) is zero because no heat was added to thesystem. D)The entropy gained by the ice cube is equal to theentropy lost by the water.

E)The entropy of the water does not change because itstemperature did not change.

4.An engine manufacturer makes the claim that the engine theyhave developed will, on each cycle, take 100J of heat out ofboiling water at 100∘C, do mechanical work of 80J, and exhaust 20Jof heat at 10∘C. What, if anything, is wrong with this claim?

A)There is nothing wrong with this claim because 100J=20J +80J.

B)An engine would operate by taking in heat at the lowertemperature and exhausting heat at the higher temperature.

C)The efficiency of this engine is greater than the ideal Carnotcycle efficiency.

D)This engine violates the first law of thermodynamics because100 J +20J ≠ 80 J.

E)The heat exhausted must always be greater than the work doneaccording to the second law of thermodynamics.