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# The energy source on Voyager2 is not a nuclear reactor, in

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The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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18 Jun 2007, 08:39
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The energy source on Voyager 2 is not a nuclear reactor, in which atoms are actively broken apart; rather a kind of nuclear battery that uses natural radioactive decay to produce power.

(A) apart; rather
(B) apart, but rather
(C) apart, but rather that of
(D) apart, but that of
(E) apart: it is that of
[Reveal] Spoiler: OA

Last edited by walker on 21 Apr 2016, 09:09, edited 2 times in total.
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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18 Jun 2007, 08:57
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think of it like this-

B) the energy source is not X, but rather a kind of Y

C) the energy source is not X, but rather that of a kind of Y

C is unnecessary and changes the meaning of the sentence, hence answer is B
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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10 Mar 2012, 19:30
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I have chosen B for this question:

A. This answer choice does 2 things incorrectly - it splits the comparison into 2 independence clauses and the second clause is a fragment. There is no reason to include a semicolon because it is splitting up the comparison into 2 sentences.

B. This answer is correct because it follows the not X, but rather Y comparison. Also, the elements are parallel.

C. This answer is incorrect. Although it does follow not X, but rather Y, "that of" is a relative pronoun that refers to nothing.

D. "That" does not refer to anything.

E. Again, the semicolon is unnecessary because we want a sentence that clearly describes the comparison in one thought.
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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11 Mar 2012, 00:38
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Undoubtedly B. Its very clear as the other sounds very awkward.
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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24 May 2013, 01:13
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Actually it is not just but, but not X but Y.

X is a phrase: a nuclear reactor (,in which atoms are actively broken apart)
Y is also a phrase: rather a kind of nuclear battery (that uses natural radioactive decay to produce power)

I have put the modifiers (relative clauses) in brackets above to make it clear that the actual phrases are a nuclear reactor and a kind of nuclear battery.

In fact, I can't think of any scenario where Not X but Y would have complete clauses in X and Y. Does something come to your mind? Would be interesting to see.
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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01 Jun 2016, 19:33
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Expert's post
The energy source on Voyager 2 is not a nuclear reactor, in which atoms are actively broken apart; rather a kind of nuclear battery that uses natural radioactive decay to produce power.

Meaning and analysis:
The energy source on Voyager 2 is not a nuclear reactor but rather (is ) a kind of nuclear battery
"in which atoms are actively broken apart" -> is a modifier modifying nuclear reactor
that uses natural radioactive decay to produce power -> is a modifier modifying nuclear battery

(A) apart; rather -> rather is a conjunction and cannot be used with a Semi colon. Semi colon joins two Clauses.

(B) apart, but rather -> Correct

(C) apart, but rather that of
Comparing nuclear reactor with "that" of battery. Not sure what is referred by "That"

(D) apart, but that of
Comparing nuclear reactor with "that" of battery. Not sure what is referred by "That"

(E) apart: it is that of
1) Normally, colon is used to provide examples or long fragments in the list. I think, semi colon would have been appropriate
2) Comparing nuclear reactor with "that" of battery. Not sure what is referred by "That"
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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18 Jun 2007, 10:44
I agree with r019h. "that of" is too wordy and unnecessary.
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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23 Mar 2012, 12:10
Others sound wrong. Answer should be B
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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29 Mar 2012, 23:43
follows idiomatic expression not x, but rather y

a. use of semicolon wrong + not idiomatic
b. Correct
c. that of - reference error, there is no antecedent to this.
d. not idiomatic - rather missing
e. that of - reference error, there is no antecedent to this. + not idiomatic - rather missing
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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30 Mar 2012, 00:22
IMO B.

A/D/E - wrong idiom
C - 'that of' - that has no referent
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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30 Mar 2012, 01:55
C is awkward construction. B is the clear winner.
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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24 May 2013, 00:15
the question uses a "not x ...but rather y" type of construction. I am confused that in such a case is "but" acting as a coordinating conjunction i.e. it must be followed by a complete clause . If so please tell me which is the main verb in the clause followed by but i.e." a kind of nuclear battery that uses natural radioactive decay to produce power"?
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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24 May 2013, 01:48
EducationAisle wrote:
Actually it is not just but, but not X but Y.

X is a phrase: a nuclear reactor (,in which atoms are actively broken apart)
Y is also a phrase: rather a kind of nuclear battery (that uses natural radioactive decay to produce power)

I have put the modifiers (relative clauses) in brackets above to make it clear that the actual phrases are a nuclear reactor and a kind of nuclear battery.

In fact, I can't think of any scenario where Not X but Y would have complete clauses in X and Y. Does something come to your mind? Would be interesting to see.

Thankyou so much Ashish ,that was very useful. So , I can safely conclude that every usage of "but" doesn't necessitate it to be used as a conjunction.
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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24 May 2013, 07:47
There is one more thing. It looks from your earlier post that you did realize that this question uses not x ...but rather y type of construction. B, C and D are the three options that use this construct and none of these options uses a clause after but.

Hence the entire debate about whether a clause must be used after but is a moot point for this question; I understand though that your question was perhaps for a larger understanding and not necessarily limited to this question alone.

However, in general, test-takers should in fact develop an eye for seeing what really matters for a question.

The reason I want to highlight this is that students get worked-up on issues that don't matter for a question. This happens very often with questions where students think that a pronoun has ambiguous reference. We suggest students that if the same pronoun ambiguity exists in all 5 options, then move on, because in that case, clearly pronoun ambiguity is not being tested there; the same way as clause after but is not getting tested here: ).
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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06 Jun 2013, 23:01
I read it somewhere that 'but' and 'rather' convey the same contrast so need of clubbing them together, is it ?

I saw a question in OG verbal where the two were clubbed together.The question is there in the attachment
Attachment:

sentence _correction.jpg [ 36.2 KiB | Viewed 11011 times ]
.

Last edited by Zarrolou on 07 Jun 2013, 02:00, edited 1 time in total.
Merging similar topics.
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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06 Jun 2013, 23:12
Hi Countdown, I'm not sure where you read that differentiation, but it seems a little oversimplified.

Rather usually implies some kind of comparison, usually that I want this rather than that, as in preference.

But is a much more general term, it generally means some kind of dissidence, but it's definition is broader. (see what I did there?)

This answer is really governed by the "not" on the first line. Voyager 2 is not x, but rather y. This is an idiom that can be expected on the GMAT.

You could also turn the phrase to say something like: It is not x, rather it is y. That's fine too. But rather on it's own (answer choice A) does not make it sufficiently clear that we're still talking about Voyager 2.

Hope this helps!
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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06 Jun 2013, 23:16
VeritasPrepRon wrote:
Hi Countdown, I'm not sure where you read that differentiation, but it seems a little oversimplified.

Rather usually implies some kind of comparison, usually that I want this rather than that, as in preference.

But is a much more general term, it generally means some kind of dissidence, but it's definition is broader. (see what I did there?)

This answer is really governed by the "not" on the first line. Voyager 2 is not x, but rather y. This is an idiom that can be expected on the GMAT.

You could also turn the phrase to say something like: It is not x, rather it is y. That's fine too. But rather on it's own (answer choice A) does not make it sufficiently clear that we're still talking about Voyager 2.

Hope this helps!
-Ron

Thanks Ron ,

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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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12 Sep 2013, 09:45
VeritasPrepRon wrote:
Hi Countdown, I'm not sure where you read that differentiation, but it seems a little oversimplified.

Rather usually implies some kind of comparison, usually that I want this rather than that, as in preference.

But is a much more general term, it generally means some kind of dissidence, but it's definition is broader. (see what I did there?)

This answer is really governed by the "not" on the first line. Voyager 2 is not x, but rather y. This is an idiom that can be expected on the GMAT.

You could also turn the phrase to say something like: It is not x, rather it is y. That's fine too. But rather on it's own (answer choice A) does not make it sufficiently clear that we're still talking about Voyager 2.

Hope this helps!
-Ron

Thanks for making it clear, I was thinking that "But" is not required with "rather"...Forgot that its a Idiom.
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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09 Nov 2014, 07:48
bmwhype2 wrote:
The energy source on Voyager2 is not a nuclear reactor, in which atoms are actively broken apart; rather a kind of nuclear battery that uses natural radioactive decay to produce power.
(A) apart; rather
(B) apart, but rather
(C) apart, but rather that of
(D) apart, but that of
(E) apart: it is that of

The idiom is not X but rather Y. Therefore, ADE are wrong.

Why is B correct instead of C? Is it because it is more concise?

10 seconds
cannot be semicolon , need 2 clause.. there are no 2 clause
rather Y is correct ,then rather that of Y
So B
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Re: The energy source on Voyager2 is not a nuclear reactor, in [#permalink]

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13 Apr 2015, 18:40
bmwhype2 wrote:
The energy source on Voyager2 is not a nuclear reactor, in which atoms are actively broken apart; rather a kind of nuclear battery that uses natural radioactive decay to produce power.
(A) apart; rather
(B) apart, but rather
(C) apart, but rather that of
(D) apart, but that of
(E) apart: it is that of

I get it that B is right answer, but just want to confirm this for some other question " isn't "but rather" together redundant"
Re: The energy source on Voyager2 is not a nuclear reactor, in   [#permalink] 13 Apr 2015, 18:40

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