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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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Updated on: 21 Apr 2016, 09:09
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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

Originally posted by bmwhype2 on 18 Jun 2007, 08:39.
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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18 Jun 2007, 10:44
I agree with r019h. "that of" is too wordy and unnecessary.
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The energy source on Voyager 2 is not a nuclear reactor, in which atom [#permalink]

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Updated on: 21 Jul 2017, 17:32
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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

isnt "a kind of nuclear battery ..." a clause? if yes, why cant i connect the 2 clauses with a semi colon using rather?Please explain

Originally posted by devinawilliam83 on 19 Jan 2012, 22:43.
Last edited by hazelnut on 21 Jul 2017, 17:32, edited 2 times in total.
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Re: The energy source on Voyager 2 is not a nuclear reactor, in which atom [#permalink]

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19 Jan 2012, 23:05
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You can not use a semicolon since you do not have two independent clauses.

The following can not stand alone on its own:

Rather a kind of nuclear battery that uses natural radioactive decay to produce power.

It is dependent on the preceding clause. It is also unidiomatic. The idiom is - "not X, but rather Y"

So you have to stick with it. This eliminates A and E.

Parallelism eliminates C and D.

not a nuclear reactor, but rather a kind of battery. Adding that messes it all up.

Hope this helps.
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Re: The energy source on Voyager 2 is not a nuclear reactor, in which atom [#permalink]

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20 Jan 2012, 00:35
Thanks, would the following construction be right?
The energy source on Voyager 2 is not a nuclear reactor, in which atoms are actively broken apart; it is a kind of nuclear battery that uses natural radioactive decay to produce power.?

also, isnt nuclear battery a noun and uses a verb for the sentence post the semi colon in the original question to qualify as a clause

just trying to get my concept clear
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Re: The energy source on Voyager 2 is not a nuclear reactor, in which atom [#permalink]

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20 Jan 2012, 09:24
The sentence requires the use of a conjunction which brings in contrast .Hence the use of but is a must here.I think an independent clause cannot begin with rather although there might be an independent subject and verb etc.The use of rather itself brings in a sense of dependency .
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Re: The energy source on Voyager 2 is not a nuclear reactor, in which atom [#permalink]

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20 Jan 2012, 17:16
devinawilliam83 wrote:
Thanks, would the following construction be right?
The energy source on Voyager 2 is not a nuclear reactor, in which atoms are actively broken apart; it is a kind of nuclear battery that uses natural radioactive decay to produce power.?

also, isnt nuclear battery a noun and uses a verb for the sentence post the semi colon in the original question to qualify as a clause

just trying to get my concept clear

It appears correct to me. The only thing that could be questionable (for the record I think it is correct) is the pronoun reference to it. Logically "it" refers to the energy source on Voyager 2 so I think you are good to go. Someone correct me if they believe otherwise.
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Re: The energy source on Voyager 2 is not a nuclear reactor, in which atom [#permalink]

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20 Jan 2012, 20:57
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Isn't 'but rather' repetitive in the option B?
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Joined: 06 Apr 2011
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Re: The energy source on Voyager 2 is not a nuclear reactor, in which atom [#permalink]

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21 Jan 2012, 03:20
Hi u0422811 i dont think so "It" is correct, beacuse It can refer to nuclear reactor also
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Re: The energy source on Voyager 2 is not a nuclear reactor, in which atom [#permalink]

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21 Jan 2012, 11:24
not an independent clause...
+1 B
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Re: The energy source on Voyager 2 is not a nuclear reactor, in which atom [#permalink]

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24 Jan 2012, 10:24
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devinawilliam83 wrote:
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

isnt "a kind of nuclear battery ..." a clause? if yes, why cant i connect the 2 clauses with a semi colon using rather?Please explain

Hi,

The prerequisite for any clause is that it must have a subject and it must have a verb. Presence of SV pair makes a clause, either a dependent or an independent.

This sentence can be divided into following clauses:

The energy source on Voyager 2
is not a nuclear reactor (Independent Clause) (blue = subject, green = verb)

in which atoms are actively broken apart (Dependent clause)

rather a kind of nuclear battery

that uses natural radioactive decay to produce power. (dependent clause)

"rather a kind of nuclear battery" is not a clause because it does not have any verb. Together, this phrase and the last clause build a dependent clause that appears after the semicolon. This is the incorrect sentence structure.

Also note that for every clause, IC or DC, the SV pairs must be independent. The verb of one clause cannot play the role of verb for the subject of another clause.

devinawilliam83 wrote:
Thanks, would the following construction be right?
The energy source on Voyager 2 is not a nuclear reactor, in which atoms are actively broken apart; it is a kind of nuclear battery that uses natural radioactive decay to produce power.?

also, isnt nuclear battery a noun and uses a verb for the sentence post the semi colon in the original question to qualify as a clause

just trying to get my concept clear

The sentence that you have cited is correct. "it" in the beginning of the second IC correctly refers to "The energy source on voyager 2" because they both are placed in the subject position of the ICs. This is from the grammatical standpoint. Logically also "it" refers to the same because the second IC is talking about "nuclear battery" which is a kind of "energy source" only.

Hope this helps.

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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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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 Voyager 2 is not a nuclear reactor, in which atom [#permalink]

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28 Jul 2012, 15:16
bsaikrishna wrote:
Isn't 'but rather' repetitive in the option B?
Can someone answer above point? This question brought me here in the forum. I ,in fact, striked this option being an convoluted repetitive option, when going through the options in the first run. Though, I got this question correct by selecting this choice in the second pass because I scratched all the choices, still want to know the best answer for this construction.

I know that "but rather" is OA, but wouldn't "but" only would be sufficient :
Shouldn't
(B) apart, but
or even
(B) apart, rather
work?
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Re: The energy source on Voyager 2 is not a nuclear reactor, in which atom [#permalink]

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30 Jul 2012, 02:27
devinawilliam83 wrote:
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

isnt "a kind of nuclear battery ..." a clause? if yes, why cant i connect the 2 clauses with a semi colon using rather?Please explain

Usage of "not X...but rather Y..."

A: semi-colon can't be used so eliminated
B. Should be it..
C. Introduces parallelism err "that of"
D. Parallelism & idiom errs
E. "that of" parallelism err
Re: The energy source on Voyager 2 is not a nuclear reactor, in which atom   [#permalink] 30 Jul 2012, 02:27

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