Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 24 May 2017, 18:02

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Proposal: Carbon dioxide and methane in the atmosphere block

Author Message
TAGS:

### Hide Tags

Senior Manager
Joined: 23 May 2006
Posts: 325
Followers: 2

Kudos [?]: 329 [0], given: 0

Proposal: Carbon dioxide and methane in the atmosphere block [#permalink]

### Show Tags

03 Aug 2008, 12:24
13
This post was
BOOKMARKED
00:00

Difficulty:

45% (medium)

Question Stats:

61% (02:59) correct 39% (01:22) wrong based on 532 sessions

### HideShow timer Statistics

Edit: This discussion has retired. Find the new thread HERE

Proposal: Carbon dioxide and methane in the atmosphere block the escape of heat into space. So emission of these “greenhouse” gases contributes to global warming. In order to reduce global warming, emission of greenhouse gases needs to be reduced. Therefore, the methane now emitted from open landfills should instead be burned to produce electricity.
Objection: The burning of methane generates carbon dioxide that is released into the atmosphere.

Which of the following, if true, most adequately counters the objection made to the proposal?

A. Every time a human being or other mammal exhales, there is some carbon dioxide released into the air.
B. The conversion of methane to electricity would occur at a considerable distance from the landfills.
C. The methane that is used to generate electricity would generally be used as a substitute for a fuel that does not produce any greenhouse gases when burned.
D. Methane in the atmosphere is more effective in blocking the escape of heat from the Earth than is carbon dioxide.
E. The amount of methane emitted from the landfills could be reduced if the materials whose decomposition produces methane were not discarded, but recycled.
[Reveal] Spoiler: OA
If you have any questions
New!
Director
Joined: 23 Sep 2007
Posts: 787
Followers: 5

Kudos [?]: 192 [0], given: 0

Re: Proposal: Carbon dioxide and methane in the atmosphere block [#permalink]

### Show Tags

03 Aug 2008, 13:34
D

assuming that 1 methane molecule gives 1 co2 molecule when burnt
Senior Manager
Joined: 06 Apr 2008
Posts: 437
Followers: 1

Kudos [?]: 155 [0], given: 1

Re: Proposal: Carbon dioxide and methane in the atmosphere block [#permalink]

### Show Tags

04 Aug 2008, 01:14
x97agarwal wrote:
Proposal: Carbon dioxide and methane in the atmosphere block the escape of heat into space. So emission of these “greenhouse” gases contributes to global warming. In order to reduce global warming, emission of greenhouse gases needs to be reduced. Therefore, the methane now emitted from open landfills should instead be burned to produce electricity.
Objection: The burning of methane generates carbon dioxide that is released into the atmosphere.

Which of the following, if true, most adequately counters the objection made to the proposal?

A. Every time a human being or other mammal exhales, there is some carbon dioxide released into the air.
B. The conversion of methane to electricity would occur at a considerable distance from the landfills.
C. The methane that is used to generate electricity would generally be used as a substitute for a fuel that does not produce any greenhouse gases when burned.
D. Methane in the atmosphere is more effective in blocking the escape of heat from the Earth than is carbon dioxide.
E. The amount of methane emitted from the landfills could be reduced if the materials whose decomposition produces methane were not discarded, but recycled.

IMO D)
Retired Moderator
Joined: 18 Jul 2008
Posts: 975
Followers: 10

Kudos [?]: 219 [0], given: 5

Re: Proposal: Carbon dioxide and methane in the atmosphere block [#permalink]

### Show Tags

04 Aug 2008, 11:52
Why can't it be C?
VP
Joined: 17 Jun 2008
Posts: 1381
Followers: 8

Kudos [?]: 328 [1] , given: 0

Re: Proposal: Carbon dioxide and methane in the atmosphere block [#permalink]

### Show Tags

04 Aug 2008, 12:48
1
KUDOS
1
This post was
BOOKMARKED
x97agarwal wrote:
Proposal: Carbon dioxide and methane in the atmosphere block the escape of heat into space. So emission of these “greenhouse” gases contributes to global warming. In order to reduce global warming, emission of greenhouse gases needs to be reduced. Therefore, the methane now emitted from open landfills should instead be burned to produce electricity.
Objection: The burning of methane generates carbon dioxide that is released into the atmosphere.

Which of the following, if true, most adequately counters the objection made to the proposal?

A. Every time a human being or other mammal exhales, there is some carbon dioxide released into the air. -> irrelevant
B. The conversion of methane to electricity would occur at a considerable distance from the landfills. -> irelevant
C. The methane that is used to generate electricity would generally be used as a substitute for a fuel that does not produce any greenhouse gases when burned. -> this strengthens the objection saying methane should not be burnt
D. Methane in the atmosphere is more effective in blocking the escape of heat from the Earth than is carbon dioxide. -> this counters most effectively saying that CO2 is less effective than methane in releasing greenhouse gases
E. The amount of methane emitted from the landfills could be reduced if the materials whose decomposition produces methane were not discarded, but recycled. -> irrelevant

_________________

cheers
Its Now Or Never

GMAT Club Legend
Joined: 01 Oct 2013
Posts: 10369
Followers: 997

Kudos [?]: 225 [0], given: 0

Re: Proposal: Carbon dioxide and methane in the atmosphere block [#permalink]

### Show Tags

20 Sep 2014, 23:31
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Manager
Joined: 17 Sep 2015
Posts: 54
Location: United Kingdom
GMAT 1: 640 Q42 V38
GPA: 3.1
Followers: 1

Kudos [?]: 16 [0], given: 14

Re: Proposal: Carbon dioxide and methane in the atmosphere block [#permalink]

### Show Tags

26 Apr 2016, 12:46
Here we are trying to establish a comparison between CO2 and CH4..

Since we need to weaken the objection,which says CH4 produces CO2 hence should not be burned.

If it is established that Co2 is better in any sense, it will weaken.

Intern
Joined: 16 Feb 2016
Posts: 3
Followers: 0

Kudos [?]: 0 [0], given: 7

Re: Proposal: Carbon dioxide and methane in the atmosphere block [#permalink]

### Show Tags

27 Apr 2016, 04:17
spriya wrote:
x97agarwal wrote:
Proposal: Carbon dioxide and methane in the atmosphere block the escape of heat into space. So emission of these “greenhouse” gases contributes to global warming. In order to reduce global warming, emission of greenhouse gases needs to be reduced. Therefore, the methane now emitted from open landfills should instead be burned to produce electricity.
Objection: The burning of methane generates carbon dioxide that is released into the atmosphere.

Which of the following, if true, most adequately counters the objection made to the proposal?

A. Every time a human being or other mammal exhales, there is some carbon dioxide released into the air. -> irrelevant
B. The conversion of methane to electricity would occur at a considerable distance from the landfills. -> irelevant
C. The methane that is used to generate electricity would generally be used as a substitute for a fuel that does not produce any greenhouse gases when burned. -> this strengthens the objection saying methane should not be burnt
D. Methane in the atmosphere is more effective in blocking the escape of heat from the Earth than is carbon dioxide. -> this counters most effectively saying that CO2 is less effective than methane in releasing greenhouse gases
E. The amount of methane emitted from the landfills could be reduced if the materials whose decomposition produces methane were not discarded, but recycled. -> irrelevant

spriya
How is C strengthening ?
Greenhouse gases = methane + co2
Objection- Burning methane produces co2

C says methane will be used as a substitute that will not produce co2

Isn't c weakNING CLEARLY ?

I came down to C and D, chose C

TIA
Intern
Joined: 10 Dec 2014
Posts: 40
Location: India
Concentration: Entrepreneurship, Operations
Schools: ISB '17
GPA: 4
WE: Operations (Consulting)
Followers: 3

Kudos [?]: 19 [0], given: 11

Re: Proposal: Carbon dioxide and methane in the atmosphere block [#permalink]

### Show Tags

18 Jun 2016, 09:54
C. The methane that is used to generate electricity would generally be used as a substitute for a fuel that does not produce any greenhouse gases when burned.

Methane replaces a fuel that doesnt generate green house gases but it's not mentioned that methane also doesnt produce green house gases in this process. So it can still produce gases.
Senior Manager
Joined: 27 Mar 2016
Posts: 340
Location: United States (CO)
GMAT 1: 770 Q51 V44
GPA: 3.69
WE: Analyst (Consulting)
Followers: 17

Kudos [?]: 98 [0], given: 26

Re: Proposal: Carbon dioxide and methane in the atmosphere block [#permalink]

### Show Tags

19 Jun 2016, 01:08
Why can't it be C?

Because C does the opposite of refuting the objection!
Intern
Joined: 05 Nov 2014
Posts: 15
Followers: 0

Kudos [?]: 0 [0], given: 39

Re: Proposal: Carbon dioxide and methane in the atmosphere block [#permalink]

### Show Tags

24 Jun 2016, 05:57
Proposal: Carbon dioxide and methane in the atmosphere block the escape of heat into space. So emission of these “greenhouse” gases contributes to global warming. In order to reduce global warming, emission of greenhouse gases needs to be reduced. Therefore, the methane now emitted from open landfills should instead be burned to produce electricity.
Objection: The burning of methane generates carbon dioxide that is released into the atmosphere.

Which of the following, if true, most adequately counters the objection made to the proposal?

A. Every time a human being or other mammal exhales, there is some carbon dioxide released into the air.
-- Out of scope
B. The conversion of methane to electricity would occur at a considerable distance from the landfills.
-- Does not provide answer why methane should not be burnt

C. The methane that is used to generate electricity would generally be used as a substitute for a fuel that does not produce any greenhouse gases when burned.
-- will not cause any impact on change in amount of greenhouse gas in atmosphere. Anyways methane is used

D. Methane in the atmosphere is more effective in blocking the escape of heat from the Earth than is carbon dioxide.
-- This provide the reason to counter the objection.

E. The amount of methane emitted from the landfills could be reduced if the materials whose decomposition produces methane were not discarded, but recycled.
-- Out of scope
Senior Manager
Joined: 02 Mar 2012
Posts: 368
Schools: Schulich '16
Followers: 4

Kudos [?]: 67 [0], given: 4

Re: Proposal: Carbon dioxide and methane in the atmosphere block [#permalink]

### Show Tags

24 Jun 2016, 07:34
a bit tricky question

most od us would have 2 contenders here C and D

C- counters the proposal
D-counter the objection

we need the latter for the correct answer.

hope it helps
Intern
Joined: 26 Oct 2016
Posts: 13
Followers: 1

Kudos [?]: 0 [0], given: 64

Re: Proposal: Carbon dioxide and methane in the atmosphere block [#permalink]

### Show Tags

05 May 2017, 12:20
hsbinfy wrote:
a bit tricky question

most od us would have 2 contenders here C and D

C- counters the proposal
D-counter the objection

we need the latter for the correct answer.

hope it helps

In C isn't it saying that Methane can be used as a substitute for a fuel who's burning won't release any greenhouse gases(Co2) hence should have weakened?
Re: Proposal: Carbon dioxide and methane in the atmosphere block   [#permalink] 05 May 2017, 12:20
Similar topics Replies Last post
Similar
Topics:
3 QOTD: Proposal: Carbon dioxide and methane in the atmosphere block 8 14 May 2017, 01:03
4 The level of sulfur dioxide in the atmosphere 5 08 Apr 2017, 10:17
1 Proposal: Nitrous oxide and carbon dioxide are greenhouse 1 09 Jul 2014, 07:25
2 Proposal: Carbon dioxide and methane in the atmosphere block 4 26 Sep 2015, 08:41
1 Proposal: Carbon dioxide and methane in the atmosphere block 8 30 Jun 2014, 01:26
Display posts from previous: Sort by