LSAT 2 – Section 4 – Question 16
LSAT 2 - Section 4 - Question 16
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| Question QuickView |
Type | Tags | Answer Choices |
Curve | Question Difficulty |
Psg/Game/S Difficulty |
Explanation |
|---|---|---|---|---|---|---|---|
| PT2 S4 Q16 |
+LR
| Weaken +Weak | A
3%
144
B
3%
149
C
90%
161
D
1%
147
E
3%
148
|
134 141 148 |
+Easier | 145.613 +SubsectionMedium |
This is a weakening question: Which one of the following, if true, would cast doubt on the experimenters’ conclusion?
Our stimulus begins with a definition of nuclear fusion; nuclear fusion is a process where nuclei fuse and release energy. We then learn that this process creates a by-product; helium-4 gas. Having established this context, we now learn about an experiment involving “heavy” water. I don’t know about you, but I have no idea what “heavy” water is; luckily the LSAT is about our reasoning skills and not chemistry. We learn that the water is contained in a sealed flask within an air-filled chamber, and that after the experiment some Helium-4 was found in the chamber. The people running the experiment concluded that there must have been nuclear fusion that happened. Since this is a weakening question involving a hypothesis, we should look for an alternate hypothesis in the answer choices, an alternate possible explanation for why there was helium-4 in the chamber. Let’s see what we get:
Answer Choice (A) The researcher’s explanation is entirely compatible with this.
Answer Choice (B) But was it fusion that produced the helium-4?
Correct Answer Choice (C) We are told the chamber was air-filled, so we would therefore expect that level of helium-4. This is a much better explanation than that nuclear fusion occurred!
Answer Choice (D) But it was helium-4 they found. If anything this suggests the helium-4 was recently produced which might support the fusion hypothesis.
Answer Choice (E) Cool, but we weren’t told anything about heat; for all we know there was a large release of heat and our experiment runners hypothesis is entirely correct.
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LSAT PrepTest 2 Explanations
Section 1 - Reading Comprehension
- Passage 1 – Passage
- Passage 1 – Questions
- Passage 2 – Passage
- Passage 2 – Questions
- Passage 3 – Passage
- Passage 3 – Questions
- Passage 4 – Passage
- Passage 4 – Questions
Section 2 - Logical Reasoning
- Question 01
- Question 02
- Question 03
- Question 04
- Question 05
- Question 06
- Question 07
- Question 08
- Question 09
- 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
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