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Nuclear Fusion

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Nuclear Fusion [#permalink] New post 25 Jun 2004, 21:02
Nuclear fusion is the force that powers the Sun, the
stars, and hydrogen bombs, merging the nuclei of
atoms and not splitting them apart, as in nuclear
reactors.

(A) merging the nuclei of atoms and not splitting
them apart, as in nuclear reactors
(B) merging the nuclei of atoms instead of splitting
them apart, like nuclear reactors
(C) merging the nuclei of atoms rather than split-
ting them apart, as nuclear reactors do
(D) and merges the nuclei of atoms but does not
split them apart, as is done in unclear reactors
(E) and merges the nuclei of atoms, unlike atomic
reactors that split them apart.

I saw the msg board for this question as it has already been discussed but I could not understand how one can compare a Nuclear fusion with a 'atomic reactor'.

Any help from SC gurus plz
Thanks
Satya
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 [#permalink] New post 25 Jun 2004, 21:23
Hello Sathya

It is not comparing the Nuclear fussion with reactors ... it is comparing the Nuclear fussion - The process with the process in the reactor.

In the Sun, the nuclie of the atom megers, whereas in the reactor, the nuclie of the atoms split.

Nuclear fusion is the force that powers the Sun, the
stars, and hydrogen bombs, merging the nuclei of
atoms
and not splitting them apart, as in nuclear
reactors.

If still in doubts, let me know. (Feel free to ask Satya ....we would be more than glad to explain you till you get it :-D )
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 [#permalink] New post 25 Jun 2004, 21:58
Is the answer C? I'll try to explain to you if it is right
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 [#permalink] New post 25 Jun 2004, 22:26
Pardon me... I did not give the answer.... The answer should be C.

Nuclear fusion is the force that powers the Sun, the
stars, and hydrogen bombs, merging the nuclei of
atoms and not splitting them apart, as in nuclear
reactors.
(take out the sentence #IS THE FORCE THAT POWERS THE SUN...BOMBS#) and then analyse..... the clauses that come in between should not alter the intended meaning, thats the catch.

(Look for parallelism and verb agreements - tips .... merging, spliting - this should eliminate some of them, in this case D and E). Now, A,B, C remain.

The sentence is comparing the 2 process, hence, words like rather, better, greater etc... to be used.

Nuclear fusion is

(A) merging the nuclei of atoms and not splitting
them apart, as in nuclear reactors - Wrong - This means that the Fusion process in the Sun is merging whereas the Fusion process in Reactors are spilting. But, spliting in not nuclear fusion, it is fission. Only one process is dicussed here, wherease the comparision is between 2 processes.

(B) merging the nuclei of atoms instead of splitting
them apart, like nuclear reactors - Wrong. Same case as above.

(C) merging the nuclei of atoms rather than split-
ting them apart, as nuclear reactors do - Correct. solves the parallelism and comparision factor.

(D) and merges the nuclei of atoms but does not
split them apart, as is done in unclear reactors - Wrong, not parallel

(E) and merges the nuclei of atoms, unlike atomic
reactors that split them apart. Wrong. Not parallel.


I hope this helped. Let me know.

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 [#permalink] New post 26 Jun 2004, 02:41
C for me too...

great effort man ... thanks for the explanation...

HAVE FUN :)
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 [#permalink] New post 26 Jun 2004, 10:27
Just my 2 cents here
A) use of conjunction "and" is wrong and does not contrast the two processes of merging(sun) vs splitting(nuclear reactors)
B) wrongly compares "merging" to "nuclear reactors". Furthermore, "instead of" is a conjunction and should have been replaced by "rather on". When preceding a verb, use "rather than" instead of "instead of". See Praet's explanation on "instead of" vs "rather than" http://www.gmatclub.com/phpbb/viewtopic.php?t=2458
C) properly uses "rather than" as a conjunction and makes the right contrast between the two processes of merging(sun) vs splitting(nuclear reactors). "do" is necessary because it ensures that it is not "the nuclear reactors" that split apart but rather, "do" the action of splitting apart.
D) I don't think this one has to do with parallelism. This sentence introduces 2 conjunctions is grammatically wrong:
Nuclear fusion is the force that powers the Sun, the stars, and hydrogen bombs, and merges the nuclei of atoms but does not split them apart, as is done in unclear reactors
We see above that the 3 elements[in red] the 2 conjunctions "and" and "but" are joining. Having 2 conjunctions in the sentence makes it unecessarily wordy and confusing. Furthermore, "but does not split them apart" should have been replaced by "rather than splits them apart". It better contrasts 2 actions; that of merging vs that of splitting.
E) erroneously comparing "nuclear fusion", a process, to "nuclear reactors", a device
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 [#permalink] New post 26 Jun 2004, 20:41
Hi Carsen
Even I wrote the answer C but the OA is E.

I do not know why but I too think it should be C.

Any help from SC gurus.

Thanks
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 [#permalink] New post 26 Jun 2004, 21:01
Hi Sathya

E is not correct. C fit the bill perfect.

Could you tell me the source of the this question?. Perhaps, the OA is wrong. The source will justify.

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 [#permalink] New post 26 Jun 2004, 21:18
It is a question from 885SC posted my 'bogdan'. I think it is same as gmat plus.
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 [#permalink] New post 26 Jun 2004, 23:03
carsen wrote:
Hi Sathya

E is not correct. C fit the bill perfect.

Could you tell me the source of the this question?. Perhaps, the OA is wrong. The source will justify.

Regards

ad hominem :)
Unless someone can defend E, I say it is wrong.
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Re: Nuclear Fusion [#permalink] New post 27 Jun 2004, 00:37
I think C is correct.
Have no clue why E may be OA
atomic reactors? we are not supposed to know what they are. Its out of scope!
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 [#permalink] New post 27 Jun 2004, 00:38
[X is the force] that powers the sun............and merges the [atomic]

I think this seems the most parallel. E is better than D.

I also couldnt understand why E has atomic reactors.


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 [#permalink] New post 27 Jun 2004, 00:40
Just to clarify my explanation for E.
E says: Nuclear fusion is [blah blah blah], unlike atomic reactors that [...]
E is comparing apples and oranges. It cannot certainly not be right
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 [#permalink] New post 27 Jun 2004, 00:44
I'm getting silly thoughts !


could it be because atomic reactors split atoms into nuclei ........and nuclear fusion merges them ???

Also it seems strange that "nuclear fusion" [= a force] is being compared to nuclear and atomic reactors !!!!

Somebody help me :)

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 [#permalink] New post 28 Jun 2004, 02:55
I belive that (D) is better option as compared to either (C) or (E).
(E) as said has a comparison problem,
(A),(B),(C) sounds as if hydrogen bombs are merging.... and not the nuclear fusion.

Hence in my opinion (D) is better, (OA looks wrong to me)
Also there is no parallelism problem in (D), as "powers" ..... and "meges" exactly fits the parallelism.

any suggestions?
  [#permalink] 28 Jun 2004, 02:55
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