Often audible as screeching, track friction is created in train statio

Question

Often audible as screeching, track  friction is created in train stations from  high-temperature metals and carbon dusts, two common railroad waste products, interact with the rail bed.

A. friction is created in train stations from

B. friction is created in train stations when

C. friction is created in train stations, and when

D. friction, created in train stations when

E. friction, created in train stations from

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dhs0079 · Answer

The modifier modifies the noun entity “track friction”, and IMO should be B?

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sanjitscorps18 · Answer

A. friction is created in train stations from
--> from......interact is nonsensical. It could have been "from the interaction of"

B. friction is created in train stations when
--> Looks okay

C. friction is created in train stations, and when
--> ", and" breaks the cause and effect relationship

D. friction, created in train stations when
--> creates a fragment with no main verb

E. friction, created in train stations from
--> same as A and D

IMHO Option B

zhanbo · Answer

My answer is  (B) . It took me 52 seconds.

(A) As a preposition, "from" should be followed by a noun or pronoun or such phrase, not a clause ("high-temperature metals and carbon dusts interact with the rail bed").

(B) "when" is a conjunction that introduces a clause.

(C) Even without considering its meaning, this version is incorrect because
(1) A proposition phrase "in train stations" is not parallel with a clause "when ...". 
(2) Even though GMAT is not super strict with punctuation use, when there are only two items in a list, use "X and Y" rather than "X, and Y".

(D) Not a sentence.

(E) See (A) and (D).

HarshaBujji · Answer

A. friction is created in train stations from hold

B. friction is created in train stations when hold

C. friction is created in train stations,  and  when  Parallelism error

No SV pair  
 D. friction, created in train stations when

E. friction, created in train stations from

A vs B
when is appropriate, It tells about the instant of time it happens.

IMO B

wadhwakaran · Answer

A. friction is created in train stations from  Incorrect as the sentence means TF is created when X and Y interact with Z. Use of from is incorrect here.

B. friction is created in train stations when  Correct

C. friction is created in train stations, and when  Incorrect as 'and' is not required

D. friction, created in train stations when  Incorrect as the sentence contains no verb

E. friction, created in train stations from  Incorrect as the sentence contains no verb and from is also wrong here

rxb266 · Answer

Since the underlined portion of the sentence contains several prepositions, check for idiom errors. Since the latter part of the sentence is metals and carbon dusts…interact, the correct idiom is created…when, not created…from as used in the original sentence. This is an idiom error, so eliminate choice A and look for any obvious repeaters. Choice E is an obvious repeater since it also uses the construction created…from, so eliminate choice E. Now evaluate the remaining answer choices individually, looking for reasons to eliminate each.

Choice B uses the correct idiom created…when, and introduces no new errors, so keep choice B. Choice C uses the construction and when, turning when high-temperature metals…rail bed into a subordinate clause, so eliminate choice C. Choice D places a comma before created…when, incorrectly turning created in train stations when...rail bed into a subordinate clause, so eliminate choice D.

Choice A: No. This choice uses created…from instead of the correct created…when. Idiom.

Choice B: Correct

Choice C: No. This choice incorrectly creates the subordinate clause when high-temperature metals…rail bed. Clauses & Connectors.

Choice D: No. This choice incorrectly creates the subordinate clause created in train stations when...rail bed. Clauses & Connectors.

Choice E: No. This choice uses created…from instead of the correct created…when. Idiom.

The correct answer is choice B.

Often audible as screeching, track friction is created in train statio

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Often audible as screeching, track friction is created in train statio

Prep Toolkit

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