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Although fullerenes--spherical molecules made entirely of

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Although fullerenes--spherical molecules made entirely of [#permalink] New post 26 Jun 2008, 14:34
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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 occuring fullerenes are arranged in a previously unknown crystalline structure.
(E) Shungite itself is formed only under distinctive conditions.
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Re: GMATPrep CR - Fullerenes [#permalink] New post 26 Jun 2008, 16:12
IMO B.
Because that might imply "fullerenes" is created in space and not in earth.
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Re: GMATPrep CR - Fullerenes [#permalink] New post 26 Jun 2008, 17:49
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terp06 wrote:
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 occuring fullerenes are arranged in a previously unknown crystalline structure.
(E) Shungite itself is formed only under distinctive conditions.


D - Because the passage is discussing that fullerenes were first found in the lab (required distinct conditions of Temp and Pres) and the passage assumes that naturally occurring fullerenes would reflect these same required conditions to be intact thus giving more insight into the earth's crust at that time.

What seriously weakens this argument?
If the naturally occurring fullerenes are arranged in an unknown structure - implying that the lab synthesis results could not be used as an accurate test case, if naturally occurring fullerence might provide differerent parameters for creation

B - Is incorrect because it is still an ambiguous statement. There is no definitive proof that the fulllernes are from space. (Maybe the meteorite was created by a comet hitting the earth and launching a piece into outter space - in this case fullerenes would stll come from Earth.)
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Re: GMATPrep CR - Fullerenes [#permalink] New post 26 Jun 2008, 17:54
AlinderPatel wrote:
terp06 wrote:
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 occuring fullerenes are arranged in a previously unknown crystalline structure.
(E) Shungite itself is formed only under distinctive conditions.


D - Because the passage is discussing that fullerenes were first found in the lab (required distinct conditions of Temp and Pres) and the passage assumes that naturally occurring fullerenes would reflect these same required conditions to be intact thus giving more insight into the earth's crust at that time.

What seriously weakens this argument?
If the naturally occurring fullerenes are arranged in an unknown structure - implying that the lab synthesis results could not be used as an accurate test case, if naturally occurring fullerence might provide differerent parameters for creation

B - Is incorrect because it is still an ambiguous statement. There is no definitive proof that the fulllernes are from space. (Maybe the meteorite was created by a comet hitting the earth and launching a piece into outter space - in this case fullerenes would stll come from Earth.)


You have a nice reasoning!
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Re: GMATPrep CR - Fullerenes [#permalink] New post 26 Jun 2008, 18:21
sondenso wrote:
AlinderPatel wrote:
terp06 wrote:
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 occuring fullerenes are arranged in a previously unknown crystalline structure.
(E) Shungite itself is formed only under distinctive conditions.


D - Because the passage is discussing that fullerenes were first found in the lab (required distinct conditions of Temp and Pres) and the passage assumes that naturally occurring fullerenes would reflect these same required conditions to be intact thus giving more insight into the earth's crust at that time.

What seriously weakens this argument?
If the naturally occurring fullerenes are arranged in an unknown structure - implying that the lab synthesis results could not be used as an accurate test case, if naturally occurring fullerence might provide differerent parameters for creation

B - Is incorrect because it is still an ambiguous statement. There is no definitive proof that the fulllernes are from space. (Maybe the meteorite was created by a comet hitting the earth and launching a piece into outter space - in this case fullerenes would stll come from Earth.)


You have a nice reasoning!



So does that warrant my first Kudo? ;)
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Re: GMATPrep CR - Fullerenes [#permalink] New post 26 Jun 2008, 19:11
AlinderPatel wrote:
So does that warrant my first Kudo?

:lol: Sorry, forgot giving you some Kudos! +1 for you!
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Last edited by sondenso on 26 Jun 2008, 20:31, edited 1 time in total.
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Re: GMATPrep CR - Fullerenes [#permalink] New post 26 Jun 2008, 19:45
sondenso wrote:
AlinderPatel wrote:
So does that warrant my first Kudo?

:lol: Sorry, forgot giving you some Kudos! +3 for you!


Sweeetttt! Thanks, am I supposed to see Kudos underneath my name, because as of now it doenst show any - new to the whole Kudo phenomenon.
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Re: GMATPrep CR - Fullerenes [#permalink] New post 26 Jun 2008, 20:33
I guess, only Mod can give you more than 1 kudos. and I modified but it did not help! Ask Walker, he is very genourous! willing to give 5 kudos! :P
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Re: GMATPrep CR - Fullerenes [#permalink] New post 27 Jun 2008, 03:05
Expert's post
+5 for begin :)
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Re: GMATPrep CR - Fullerenes [#permalink] New post 27 Jun 2008, 06:29
OA is D.
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Re: GMATPrep CR - Fullerenes [#permalink] New post 27 Jun 2008, 09:32
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Re: GMATPrep CR - Fullerenes [#permalink] New post 27 Jun 2008, 09:33
11-p483497?t=65972&hilit=fullerenes#p483497
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Re: GMATPrep CR - Fullerenes   [#permalink] 27 Jun 2008, 09:33
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