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Acid rain and snow result from the chemical reactions

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Acid rain and snow result from the chemical reactions [#permalink] New post 15 Aug 2004, 19:23
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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

OA will be followed. Thank you!
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 [#permalink] New post 15 Aug 2004, 21:29
venksune wrote:
A? C and D are surely off.


I think A and B can be eliminated at first. Because chemical reactions sould be occured between industrial emissions and atmospheric water vapor, not beteen industrial emissions and nitrogen oxides.
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 [#permalink] New post 15 Aug 2004, 21:38
Hmm.. i don't care if the answer isn't B, i find it hard to believe that one of the others could be the answer.

B!!!!!
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 [#permalink] New post 15 Aug 2004, 22:01
Oops, this is getting strange.Let me try to understand this...

Some extract for our understanding:
Scientists discovered, and have confirmed, that sulfur dioxide (SO2) and nitrogen oxides (NOx) are the primary causes of acid rain. Acid rain occurs when these gases react in the atmosphere with water, oxygen, and other chemicals to form various acidic compounds. Sunlight increases the rate of most of these reactions. The result is a mild solution of sulfuric acid and nitric acid

Why is B wrong?

Only choice left is E and would be a wild one - Are we all missing something here. I am actually concerned here. :shock:
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 [#permalink] New post 15 Aug 2004, 23:19
OA is E.
It is No. 15(page 4) of SC885.

Fitst, I cut off A and B as I mentioned before.
Then, I eliminated D, because "which are highly corrosive" is awkward. It can be simply written as "highly corrosive sulfuric and nitric acids".
Now, I wonder between C and E. I was reluctant to pick E, because there is no subject which has intention "to produce". How can I pick E instead of C?
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 [#permalink] New post 15 Aug 2004, 23:37
We have to be watchful if we see 'which'. If 'which' has more than one antecedent - then the whole sentence can contain some error or other. Also, 'has produced' is a wrong verb tense here. What is described here is a phenomenon that can occur any time such reaction happens. 'has produced' sounds as thought it happened once. Completely alters intent of the sentence. Hence C is completely off.

I am still not convinced about E.
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 [#permalink] New post 15 Aug 2004, 23:38
By saying industrial emissions of sulfur dioxide and nitrogen oxides
and atmospheric water vapor (choice E), it's suggesting that atmospheric water vapor
is emitted by industrial plants !

B would be better, it says industrial emission of sulfur dioxide and nitrogen oxides
with atmospheric water vapor. Now this is very clear, sulfur dioxide and nitrogen oxides
are emitted, while water vapor is there in the atmosphere.

Venksune, what do you think ?
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 [#permalink] New post 15 Aug 2004, 23:49
I agree ywilfred...

SO2 + NO reacts with Water vapor is what is right. Refer to the extract from the web on Acid rains. It is not SO2+NO+Water vapor - If this is the right logic then E is fine - else surely wrong.
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 [#permalink] New post 15 Aug 2004, 23:56
venksune wrote:
We have to be watchful if we see 'which'. If 'which' has more than one antecedent - then the whole sentence can contain some error or other. Also, 'has produced' is a wrong verb tense here. What is described here is a phenomenon that can occur any time such reaction happens. 'has produced' sounds as thought it happened once. Completely alters intent of the sentence. Hence C is completely off.

I am still not convinced about E.


I understand why C is not corrct. This is the case that everlasting truth must be written in present form. Thanks venksune!
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 [#permalink] New post 16 Aug 2004, 00:14
I think only E could be the answer. There are are no close calls. It is a case of proper use of "between X and Y.". Here X is industrial ommisions of sulphur dioxide and nitrogen oxides and Y is atmospheric water vapor.
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 [#permalink] New post 16 Aug 2004, 00:20
similarly Y could have been Nitrogen oxide ! I think for this SC, you need to rely on more than just idioms. You have to look at the structure of the sentence as a whole and see if everything fits in, in this case, there is a strong possibility that E suggests water vaopur came from industrial emissions. The best answer must always leave no doubt at any one time.
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 [#permalink] New post 22 Jan 2005, 23:31
It should be the reaction between A and. Thus A and B are wrong.

C and D are wrong because of the tenses of the which clauses

Therefore E.
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Re: SC - from 885 - 5 [#permalink] New post 17 Sep 2005, 16:08
It seems good oone.

It should be E because Between should be followed by and not with. C and D have relative pronoun, which, problem.
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good one [#permalink] New post 17 Sep 2005, 16:22
Good question.

Off the bat I almost picked A but as mentioned b4 industrial emissions and atmospheric water vapor need to get together to make something, hence I'll go for E. The others, B,C,D are out for me 'cause to produce works better.
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good one   [#permalink] 17 Sep 2005, 16:22
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