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1000 SC question No 56

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magical cook Master | Next Rank: 500 Posts Default Avatar
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1000 SC question No 56

Post Sun Mar 18, 2007 4:15 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    Hello,

    I am a bit confused the answer is E. I thought the answer would be either A) or B) .... because if there is 3 "and"s, I think "comma" is required instead of "and" before nitric acids, the second noun (based on the structure A, B and C)

    Could anyone explain why???

    Thanks!!


    Acid rain and snow result from the chemical reactions between industrial emissions of sulfur dioxide and nitrogen oxides with atmospheric water vapor to produce highly corrosive sulfuric and nitric acids.

    (A) with atmospheric water vapor to produce highly corrosive sulfuric and nitric acids

    (B) with atmospheric water vapor producing highly corrosive sulfuric and nitric acids

    (C) and atmospheric water vapor which has produced highly corrosive sulfuric and nitric acids

    (D) and atmospheric water vapor which have produced sulfuric and nitric acids which are highly corrosive

    (E) and atmospheric water vapor to produce highly corrosive sulfuric and nitric acids

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    jayhawk2001 Community Manager
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    Post Sun Mar 18, 2007 5:54 pm
    "Between ... and" is the correct idiom.

    In this sentence the reaction is between "industrial emissions of
    sulfur dioxide and nitrogen oxides" AND "atmospheric water vapor".

    We can rule out A and B based on the above.

    C and D use "which" in a restrictive clause - incorrect

    Hence E

    magical cook Master | Next Rank: 500 Posts Default Avatar
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    Post Sun Mar 18, 2007 6:02 pm
    Okay I got it - Thank you!!

    Oh, also, (sorry for silly question) but in GMAT, which dose not have commna (restrictive clause) is NOT always acceptable???


    Thank you for your help!
    R.

    jayhawk2001 Community Manager
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    Post Sun Mar 18, 2007 6:44 pm
    Hmm, I'm not sure about the "Always acceptable" part as there can be
    cleverly formed sentences that make it seem as though there's
    no need for a comma.

    Exceptions are always possible :-)

    magical cook Master | Next Rank: 500 Posts Default Avatar
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    Post Sun Mar 18, 2007 6:47 pm
    Ok - thanks again!

    Cybermusings Legendary Member Default Avatar
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    Post Tue Apr 03, 2007 5:30 am
    "between" is always used in conjuction with the word and. Hence A and B are faulty.


    The sentence is trying to convey that the reaction between sulfur dioxide and nitrogen oxide with atmospheric water produces corrosive sulphuric and nitric acids. Howver, choices C and D seem to misleadingly indicate that atmospheric water produces these acids. hence the clear choice is E

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