Acid Rain

srisl11 · Posted: Sat Nov 22, 2008 1:28 am Post subject: Acid Rain

56.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

One more confusing one Shocked

gmatnvarun · Posted: Sat Nov 22, 2008 2:46 am Post subject:

since there is a 'between' used here,there has to be an 'and' too.So,we can ignore A and B.And,it looks like the chemical reaction is happening between the 'industrial emissions of sulfur dioxide and nitrogen oxides' and ' atmospheric water vapor' .D can be ignored as it is wrongly using 'which have' after the water vapour.In C,'which is ' after the 'water vapour' is taking only water vapour into consideration and hence leaves keeping both emmissions and watervapour.My chhoice is E.

Thanks,Varun

srisl11 · Posted: Sat Nov 22, 2008 2:59 am Post subject:

gmatnvarun
The sentence will look like this
Acid rain and snow result from the chemical reactions between industrial emissions of sulfur dioxide and nitrogen oxides and atmospheric water vapor to produce highly corrosive sulfuric and nitric acids

The OA is E

I'm little confused regarding the and.....and... structure

or may be I should use the Idiom between X and Y and go for E

iamcste · Posted: Sat Nov 22, 2008 3:26 am Post subject: Re: Acid Rain

karmayogi · Posted: Sat Nov 22, 2008 3:42 am Post subject:

Idiom is between x and y.

I also selected E. But, I am little confused about the last part ...vapor to produce highly corrosive.... 'to produce' seems to be awkward to me.

Any explanation?

srisl11 · Posted: Sat Nov 22, 2008 3:47 am Post subject:

iamcste · Posted: Sat Nov 22, 2008 4:17 am Post subject:

"Producing" would be better

But, all others get eliminated so you can say E is the better among the lot

This is not uncommon-1000 SC has the feature inbulit in it

If some one starts studay with 1000 SC, (s) he would be filled with such doubts

gmatnvarun · Posted: Sat Nov 22, 2008 4:26 am Post subject:

I think we all would agree that by following the process of elimination and by applying the idiom ' between X and Y',we are coming down to choice E.

Justification for E -

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

Try reading like this - A results from chemical reactions between X and Y to produce Z.

Now,'to produce' has to be there as it defines the purpose of chemical reactions.

Hope now things will be better.