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# Although fullerenes

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Joined: 18 May 2015
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05 Jun 2015, 04:04
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Difficulty:

95% (hard)

Question Stats:

43% (01:54) correct 57% (02:02) wrong based on 216 sessions

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Although fullerenes--spherical molecules made entirely of carbon--were first found in the laboratory, they have since been found in nature, formed in fissures of the rare mineral shungite. Since laboratory synthesis of fullerenes requires distinctive conditions of temperature and pressure, this discovery should give geologists a test case for evaluating hypotheses about the state of the Earth's crust at the time these naturally occurring fullerenes were formed.

Which of the following, if true, most seriously undermines the argument?

(A) Confirming that the shungite genuinely contained fullerenes took careful experimentation.
(B) Some fullerenes have also been found on the remains of a small meteorite that collided with a spacecraft.
(C) The mineral shungite itself contains large amounts of carbon, from which the fullerenes apparently formed.
(D) The naturally occurring fullerenes are arranged in a previously unknown crystalline structure.
(E) Shungite itself is formed only under distinctive conditions.

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21 Feb 2016, 08:47
(A) Confirming that the shungite genuinely contained fullerenes took careful experimentation. - incorrect - Argument says shungite contains fullerine
(B) Some fullerenes have also been found on the remains of a small meteorite that collided with a spacecraft. - Incorrect - As it is irrelevant and out of context
(C) The mineral shungite itself contains large amounts of carbon, from which the fullerenes apparently formed. - irrelevant
(D) The naturally occurring fullerenes are arranged in a previously unknown crystalline structure. - correct - because if naturally occuring fullerines are arranged in a previously unknown structure , it is impossible to evaluate the hypothesis mentioned in argument
(E) Shungite itself is formed only under distinctive conditions. - incorrect - These distinctive conditions can be studied to evaluate the hypothesis . So it doesnt weaken the argument
Please go through my answers and let me know my understanding is correct/not
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02 Mar 2016, 21:24
Yes your logic matches with my logic. We are looking for an answer which says that the discovery will not help the geologists to evaluate an hypothesis about the state of the Earth's crust at the time these naturally occurring fullerenes were formed. "D" suggests that the naturally occurring Fullerenes are arranged in a previously unknown structure. Hence it is impossible to evaluate an hypothesis from the same.The logic you used in eliminating answers is perfect.
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07 Mar 2016, 01:42
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D says the crystalline structure was previously unknown, but now after the successful reconstruction in the lab, it is known. So this should actually help the geologists with their research, in turn strengthening the argument.
On the other hand, option B talks about the possibility that fullerenes might be extra-terrestrial, this can be an exception to the test-case mentioned and hence option choice B should weaken the argument right?
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10 Mar 2016, 19:24
Yes your logic matches with my logic. We are looking for an answer which says that the discovery will not help the geologists to evaluate an hypothesis about the state of the Earth's crust at the time these naturally occurring fullerenes were formed. "D" suggests that the naturally occurring Fullerenes are arranged in a previously unknown structure. Hence it is impossible to evaluate an hypothesis from the same.The logic you used in eliminating answers is perfect.

Why would B be wrong?

Out of context answers should be considered in Weaken questions, If I am not wrong?

There are two ways to weaken this question -

a) disprove co-relation between Shungite and Earth's crust (Which B is attempting to do)
b) disprove co-relation between Shungite and Fullerene (Which D is attempting to do)

I am thinking the only reason B would be wrong is that no background of meteor is mentioned - But I am not sure.
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11 Apr 2018, 06:23
rachitshah wrote:
Yes your logic matches with my logic. We are looking for an answer which says that the discovery will not help the geologists to evaluate an hypothesis about the state of the Earth's crust at the time these naturally occurring fullerenes were formed. "D" suggests that the naturally occurring Fullerenes are arranged in a previously unknown structure. Hence it is impossible to evaluate an hypothesis from the same.The logic you used in eliminating answers is perfect.

Why would B be wrong?

Out of context answers should be considered in Weaken questions, If I am not wrong?

There are two ways to weaken this question -

a) disprove co-relation between Shungite and Earth's crust (Which B is attempting to do)
b) disprove co-relation between Shungite and Fullerene (Which D is attempting to do)

I am thinking the only reason B would be wrong is that no background of meteor is mentioned - But I am not sure.

What I feel is that B is also correct option and question is not framed correctly.
If we show that fullerenes came from outside the earth, and it has not been formed on earth.. then it won't give geologists a test case for evaluating hypotheses about the earth's crust.
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Re: Although fullerenes   [#permalink] 11 Apr 2018, 06:23
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