Multiple choice

Directions: In the following question, a statement is followed by two inferences. Which of the following inferences can be logically drawn from the statement?

Statement: We can easily define and measure the difference of entropy between two states of the same body. But the value found depends on the state arbitrarily chosen as the zero point of entropy, though this is not a very serious difficulty, and is analogous to what occurs in the evaluation of other physical magnitudes - temperature, potential, etc. Inference: (A) It is not possible to define a difference, or equality, of entropy between two bodies chemically different. (B) It is possible to compare the variations of entropy to which these two states (of the same body) are individually subject.

  1. If inference (A) alone can be drawn from the statement.

  2. If inference (B) alone can be drawn from the statement.

  3. If both (A) and (B) can be drawn from the statement.

  4. If neither (A) nor (B) can be drawn from the statement.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

(A) cannot be the answer because we can easily define intra-body (two states) doesn't mean we cannot define inter-body (two bodies). Inference (B) is only a restatement of the main argument.

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