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31 Dec 2011, 15:38
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Machines powered by hydraulics are not driven by the steam produced by boiling water, but rather,
high-pressure fluids are transmitted throughout the machine to various motors and hydraulic cylinders.

a) water, but rather
d) water; rather
e) water; but

According to some gmat rules, "rather than" can take on either a clause or noun,
while "instead of" goes with only a noun.
In the question above, the portion after the underlined part is clearly a clause; in that case,
the correct response should be
[Reveal] Spoiler:
D
right?
[Reveal] Spoiler: OA

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31 Dec 2011, 22:34
i was thinking of E. Because of not.....but ||ism
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Neither the prepositional phrase ‘rather than’ nor ‘instead of’ is part of the choices in the issue. Only rather and instead are the issues. Hence, I feel there is no need to confuse with unmentioned choices here. . The thing to note is that that an independent but somewhat related clause should follow a semicolon.

Choices A and B fall out because of the redundant use of ‘but rather’ and ‘but instead’. Among the adverbs -instead and rather - and the conjunction ‘but, IMO, ‘instead’ fits into the groove better because of the precise meaning of “in that place” which is better than mere contrast markers such as ‘rather and but’

C is a winner by a whisker
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22 Dec 2012, 11:49
I am unable to comprehend as to why A is incorrect.

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22 Dec 2012, 13:45
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eaakbari wrote:
I am unable to comprehend as to why A is incorrect.

Machines powered by hydraulics are not driven by the steam produced by boiling water, but rather,
high-pressure fluids are transmitted throughout the machine to various motors and hydraulic cylinders.

a) water, but rather
d) water; rather
e) water; but

Both options A and B are wrong due to redundancy issues ie but and rather BOTH show contrast , so only one of them is needed.
similarly instead and but have the same problem

AND instead is preferred to Rather here bcoz instead stands for replacement of one thing for another (high-pressure fuilds for steam) whereas rather stands for a choice b/w 2 alternatives or things. So it is C

Hope it is clear.
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16 Dec 2013, 12:44
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In MGMAT SC Chapter-9, Idiom : NOT..BUT, but rather and but instead are used in correct sentences.
e.g. A tomato is not a vegetable BUT RATHER a fruit.

I know in this question we need a coordinating conjunction to join two independent clause or ; , but making a claim that but instead or but rather together are redundant is challenging usage as mentioned in above stated example. Could anyone please help to clarify when it will be redundant and when it is ok ?
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27 Jun 2015, 03:03
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Instead should be followed by a noun phrase right??
THen how come choice c is Right.
Here the right usage should be rather??
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19 Jul 2015, 06:46
Why should 'instead' be followed by a noun phrase? After all, 'instead' is not a preposition; 'instead of' only is a prepositional phrase and must be followed by a noun or a noun phrase. Instead simply means 'in that place'

'Rather' is used when we wish to show some discrimination or preference favoring one over another. When such preference is absent, it is ok to use 'instead', IMO. In the given case no preference for use of high-pressure fluids is shown over steam. It is just that hydraulic machines use a particular process compared to the other type of machines.
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27 Jul 2015, 00:55
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But/rather/ but rather all demands parrallel structures. Instead is a complex preposition so it can forego parallel rules
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28 Dec 2015, 09:03
I was looking at the semicolon used to connect two completely correct sentences. Are they complete sentences on their own? chetan2u help. Each seems complete
And that would rule out A B
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03 Jan 2016, 11:12
Nez wrote:
I was looking at the semicolon used to connect two completely correct sentences. Are they complete sentences on their own? chetan2u help. Each seems complete
And that would rule out A B

Yes this is right. Both parts have subject and verb. Hence we can use semicolon
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03 Jan 2016, 15:32
Nez wrote:
I was looking at the semicolon used to connect two completely correct sentences. Are they complete sentences on their own? chetan2u help. Each seems complete
And that would rule out A B

I think just because they are complete sentences doesn't mean you HAVE to use a semicolon. But if you do use a semicolon, there can't be a connector, so E is definitely out.

I'm curious about the claim that "but rather" and "but instead" can be correct according to MGMAT. It'd be nice to get a final ruling.
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04 Jan 2016, 10:27
gmatbull wrote:
Machines powered by hydraulics are not driven by the steam produced by boiling water, but rather,
high-pressure fluids are transmitted throughout the machine to various motors and hydraulic cylinders.

a) water, but rather
d) water; rather
e) water; but

According to some gmat rules, "rather than" can take on either a clause or noun,
while "instead of" goes with only a noun.
In the question above, the portion after the underlined part is clearly a clause; in that case,
the correct response should be
[Reveal] Spoiler:
D
right?

a posting in this forum teaches me a similar problem. now to post the knowlege again.

rather work as a preposition. we need two words of the same kind which go with rather. I rather you. I eat rather than play

but is used to show a contrast which dose not make sense inhere. instead is better. a,b and e are out. this is meaning error.
in d, rather has no two words of the same form. it is wrong grammatically.

this is hard because the meaning error is hard and the grammatical error is subtle .
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04 Apr 2017, 23:04
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gmatbull wrote:
Machines powered by hydraulics are not driven by the steam produced by boiling water, but rather,
high-pressure fluids are transmitted throughout the machine to various motors and hydraulic cylinders.

a) water, but rather
d) water; rather
e) water; but

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