Aerugo, also known as verdigris, is the green : GMAT Sentence Correction (SC)
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# Aerugo, also known as verdigris, is the green

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Aerugo, also known as verdigris, is the green [#permalink]

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16 Jun 2007, 20:35
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Aerugo, also known as verdigris, is the green "bloom" visible on many copper items, and is produced, like iron rust, over the course of time by the exposure of the metal to the oxygen in the atmosphere.
a) visible on many copper items, and is produced
b) that is visible on many copper items, and which produces
c) visible on many copper items, and produces
d) that is visible on many copper items, and that produces
e) which is visible on many copper items, and which is produced
[Reveal] Spoiler: OA
If you have any questions
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19 Aug 2007, 14:57
asaf wrote:
Aerugo, also known as verdigris, is the green "bloom" visible on many copper items, and is produced, like iron rust, over the course of time by the exposure of the metal to the oxygen in the atmosphere.

a) visible on many copper items, and is produced
b) that is visible on many copper items, and which produces
c) visible on many copper items, and produces
d) that is visible on many copper items, and that produces
e) which is visible on many copper items, and which is produced

See if you can validate your choice with a reason

It is A or E,
E has which, redundant after and,
no clue, confused, SC gurus, help
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19 Aug 2007, 19:18
the correct tense is produced rather than produces.

which is , which is is redundant in E. Will go for A.
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19 Aug 2007, 19:40
asaf wrote:
Aerugo, also known as verdigris, is the green "bloom" visible on many copper items, and is produced, like iron rust, over the course of time by the exposure of the metal to the oxygen in the atmosphere.

a) visible on many copper items, and is produced
b) that is visible on many copper items, and which produces
c) visible on many copper items, and produces
d) that is visible on many copper items, and that produces
e) which is visible on many copper items, and which is produced

See if you can validate your choice with a reason

that and which - I dont think is applicable here, which makes BDE out. Between A and D , A is right becasue "is produced by the exposure.."
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21 Aug 2007, 01:42
I see nothing wrong in the original sentence. So I go for A.

E just rewrites the same sentence with a couple of "which"s thrown in to confuse us.

"Produces" is wrong in the other choices.
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21 Aug 2007, 04:56
All other choices are grammatically incorrect.
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21 Aug 2007, 07:04
A.
Verdigris..., is produced, like iron rust,...by the exposure [ produces will be wrong]
Which in choice E is not only used incorrectly, it also makes the sentence wordy.
asaf wrote:
Aerugo, also known as verdigris, is the green "bloom" visible on many copper items, and is produced, like iron rust, over the course of time by the exposure of the metal to the oxygen in the atmosphere.

a) visible on many copper items, and is produced
b) that is visible on many copper items, and which produces
c) visible on many copper items, and produces
d) that is visible on many copper items, and that produces
e) which is visible on many copper items, and which is produced

See if you can validate your choice with a reason
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22 Aug 2007, 04:09
asaf wrote:
Aerugo, also known as verdigris, is the green "bloom" visible on many copper items, and is produced, like iron rust, over the course of time by the exposure of the metal to the oxygen in the atmosphere.

a) visible on many copper items, and is produced
b) that is visible on many copper items, and which produces
c) visible on many copper items, and produces
d) that is visible on many copper items, and that produces
e) which is visible on many copper items, and which is produced

See if you can validate your choice with a reason

E cannot be the choice here 'cos when "which is visible on many copper items, and which is produced" is removed from the original sentence the meaning changes.

Also relative pronoun should introduce a clause . So E ruled out.

A stays
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03 Sep 2010, 04:00
what is the effect of the sentence below:

Aerugo,...is the green "bloom" visible on many copper items and is produced...by the exposure of the metal to the oxygen in the atmosphere.
I think it is like saying: "Aerugo is X and is produced by..." The COMMA is removed.
As compare to: "Aerugo is X, and is produced by..." Do we need the COMMA for the same subject?

Both verbs ("is" and "and is") refer to Aerugo - the subject.
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03 Sep 2010, 06:12
Clearly A is the right answer.

none of the other choices maintain parallelism: Aerugo is visible and is produced
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03 Sep 2010, 08:17
torn between A and E ..
I go with A....which doesnot and anything ...hence A it is
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03 Sep 2010, 09:55
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asaf wrote:
Aerugo, also known as verdigris, is the green "bloom" visible on many copper items, and is produced, like iron rust, over the course of time by the exposure of the metal to the oxygen in the atmosphere.

a) visible on many copper items, and is produced
b) that is visible on many copper items, and which produces - This is visible is not parallel to which produces
c) visible on many copper items, and produces - visible is not parallel to produces
d) that is visible on many copper items, and that produces - Changes the meaning of the sentence.
e) which is visible on many copper items, and which is produced - which without a comma before it usually incorrect on GMAT.

See if you can validate your choice with a reason

Only options that use the parallelism correctly are A and D. But once you remove the non-blue portion, you will realize that A maintains parallelism and thus is our answer.
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03 Sep 2010, 10:37
Aerugo, also known as verdigris, is the green "bloom" visible on many copper items, and is produced, like iron rust, over the course of time by the exposure of the metal to the oxygen in the atmosphere.

a) visible on many copper items, and is produced ---- Correct
b) that is visible on many copper items, and which produces ---- which modifying And
c) visible on many copper items, and produces ---- 'is' is required to maintain the parallelism
d) that is visible on many copper items, and that produces --- 'is' is required to maintain the parallelism
e) which is visible on many copper items, and which is produced ---- it is not green bloom that produces but its Aerugo wrong usage of which....!!!!
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21 Sep 2011, 09:45
Aerugo, also known as verdigris, is the green "bloom" visible on many copper items, and is produced, like iron rust, over the course of time by the exposure of the metal to the oxygen in the atmosphere.

(A) visible on many copper items, and is produced
(B) that is visible on many copper items, and which produces
(C) visible on many copper items, and produces
(D) that is visible on many copper items, and that produces
(E) which is visible on many copper items, and which is produced

What's wrong with E?

Green bloom is visible and green bloom is produced by....So I think which in E is correct.

Aerugo is just a term for green bloom. Am I wrong?

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Aerugo, also known as verdigris, is the green [#permalink]

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02 Mar 2013, 05:11
Aerugo, also known as verdigris, is the green "bloom" visible on many copper items, and is produced, like iron rust, over the course of time by the exposure of the metal to the oxygen in the atmosphere.
(A)visible on many copper items, and is produced
(B)that is visible on many copper items, and which produces
(C)visible on many copper items, and produces
(D)that is visible on many copper items, and that produces
(E)which is visible on many copper items, and which is produced
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Re: Aerugo, also known as verdigris, is the green "bloom" [#permalink]

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02 Mar 2013, 19:49
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The first thing to note here is meaning. Is Aerugo produced like iron rust or does it produce iron rust? The original statement makes it clear that it is the former. For this reason, B,C, and D are out straight away.

Between A and E, reject E because it very subtly changes the meaning of the original sentence. The original sentence says 'Aerugo is the green bloom visible on many copper items.....'. Here the usage of 'visible' amounts to saying that Aerugo can be seen on many copper items. However, in option E the usage is 'Aerugo is the green bloom which is visible on many copper items....'. Here the usage of 'visible' amounts to saying that Aerugo cannot be missed on many copper items, which is a subtly different inference.

Based on this A is the answer.
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Re: Aerugo, also known as verdigris, is the green "bloom" [#permalink]

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02 Mar 2013, 23:49
Aerugo, also known as verdigris, is the green "bloom" visible on many copper items, and is produced, like iron rust, over the course of time by the exposure of the metal to the oxygen in the atmosphere.
(A)visible on many copper items, and is produced
(B)that is visible on many copper items, and which produces
(C)visible on many copper items, and produces
(D)that is visible on many copper items, and that produces
(E)which is visible on many copper items, and which is produced

Chop the unnecessary clauses:

Aerugo, also known as verdigris, is the green "bloom" visible on many copper items, and is produced, like iron rust, over the course of time by the exposure of the metal to the oxygen in the atmosphere.

Aerugo is the green "bloom" visible on many copper items, and is produced over the course of time by the exposure of the metal to the oxygen in the atmosphere.

Clauses like B, D, and E will change meaning.
C is not parallel.
A is best option.
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Last edited by ConnectTheDots on 03 Mar 2013, 05:23, edited 1 time in total.
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Re: Aerugo, also known as verdigris, is the green "bloom" [#permalink]

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03 Mar 2013, 00:20
E is wrong because it is not logic.
why E is not logic? pls help.

I do not see any similar question in og and gmatprep . anyone see a similar question in the official sourse, pls share.
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Re: Aerugo, also known as verdigris, is the green [#permalink]

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15 Apr 2013, 20:05
Duplicates posts on the same topic has been merged.
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Re: Aerugo, also known as verdigris, is the green [#permalink]

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15 Apr 2013, 23:16
Aerugo, also known as verdigris, is the green "bloom" visible on many copper items, and is produced, like iron rust, over the course of time by the exposure of the metal to the oxygen in the atmosphere.

Because of "by" ==> Passive voice must be used ==> narrow down to A & E.

E is wrong because the structure "Aeguro...... is the green "bloom" which is visible................, and which is produced............." is wrong.

A is correct.
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Re: Aerugo, also known as verdigris, is the green   [#permalink] 15 Apr 2013, 23:16

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