PT137.S2.Q11 > Question

SECTION 1 · rc

PASSAGE 1

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7

PASSAGE 2

Question 8 Question 9 Question 10 Question 11 Question 12 Question 13 Question 14

PASSAGE 3

Question 15 Question 16 Question 17 Question 18 Question 19

PASSAGE 4

Question 20 Question 21 Question 22 Question 23 Question 24 Question 25 Question 26 Question 27

SECTION 2 · lr

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7 Question 8 Question 9 Question 10 Question 11 Question 12 Question 13 Question 14 Question 15 Question 16 Question 17 Question 18 Question 19 Question 20 Question 21 Question 22 Question 23 Question 24 Question 25

SECTION 3 · lr

SECTION 4 · lr

Diamonds formed 2.9 billion years ago have an unusually high concentration of sulfur-33. This can only be caused by a chemical reaction triggered by ultraviolet light. If there was more than a trace of oxygen in the atmosphere 2.9 billion years ago, then not enough ultraviolet light would be present to cause the chemical reaction.

2.9 billion years ago, the atmosphere contained at most a trace amount of oxygen.

This answer is unsupported. We only know from the stimulus that there some of these diamonds were formed 2.9 billion years ago. We have no idea how many of these diamonds exist in total, or when they were formed

This answer is unsupported. We don’t know whether the oxygen specifically reacted with sulfur-33. We only know from the stimulus that a “certain chemical reaction” occurs when stimulated by ultraviolet light.

This answer is strongly supported. The diamonds' high concentration of sulfur-33 is only possible if UV light stimulated a reaction, and that is only possible if the atmosphere had very little oxygen.

This answer is unsupported. We don’t know anything about more recently formed diamonds from the stimulus. The stimulus is strictly limited to the diamonds from 2.9 billion years ago.

This answer is unsupported. We don’t know from the stimulus under what conditions diamonds are formed generally.

PrepTest 137 - Section 2 - Question 11

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