GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 20 Mar 2019, 06:32

Close

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
Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Though sucking zinc lozenges has been promoted as treatment for the

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

 
Manager
Manager
User avatar
Joined: 27 Feb 2010
Posts: 88
Location: Denver
Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post Updated on: 09 Oct 2018, 10:25
9
52
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

67% (01:58) correct 33% (02:17) wrong based on 1367 sessions

HideShow timer Statistics

Though sucking zinc lozenges has been promoted as treatment for the common cold, research has revealed no consistent effect. Recently, however, a zinc gel applied nasally has been shown to greatly reduce the duration of colds. Since the gel contains zinc in the same form and concentration as the lozenges, the greater the effectiveness of the gel must be due to the fact that cold virus tend to concentrate in the nose, not the mouth.

Which of the following, if true, most seriously weakens the argument?

(A) Experimental subjects who used the zinc gel not only had colds of shorter duration but also had less severe symptoms than did those who used a gel that did not contain zinc.

(B) The mechanism by which zinc effects the viruses that caused the common cold has not been conclusively established.

(C) To make them palatable, zinc lozenges generally contains other ingredients, such as citric acid, that can interfere with the chemical activity of zinc.

(D) No zinc based remedy can have any effect unless it is taken or applied within 48 hours of the onset of cold symptoms.

(E) Drug company researchers experimenting with nasal spray based on zinc have found that it has much the same effect on colds as the gel does.


Similar question with the same stem: https://gmatclub.com/forum/though-sucki ... 72764.html

Originally posted by zz0vlb on 27 Apr 2010, 08:14.
Last edited by bb on 09 Oct 2018, 10:25, edited 7 times in total.
Fixed the typo.
Most Helpful Community Reply
Knewton GMAT Representative
User avatar
Joined: 22 Jul 2010
Posts: 44
Schools: B.A. Harvard
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 28 Dec 2010, 12:05
17
6
Hi all, here's an answer to this tricky question from one of our CR experts at Knewton, Jonathan Bethune. I hope it's helpful!

This is a very interesting question. The difficulty stems from the fact that the correct answer does not appear to have any direct bearing on the argument.

Start by eliminating the obviously wrong answer choices. Choice A adds details that do not undermine anything in the argument. Choice B is too weak – we don’t really need to know the mechanism by which zinc effects viruses in order to know that it helps beat the cold. Choice D is a random detail. Choice E strengthens the argument because it shows that other zinc-based nasal treatments work just as well as the gel.

Even if you rule out all of the other answer choices, how can we deduce that C is correct? The key here is to keep in mind what the specific argument is: Zinc gel works better than zinc lozenges because cold virus concentrate in the nose. A condition of this argument is the fact that lozenges and gel contain the same concentration of zinc. If the gel had more zinc than the lozenge, then the higher concentration of zinc might account for its increased efficacy.

This is basically what choice C does. It undermines the assumption that both medications contain the same concentration of zinc. If the citric acid in the lozenge is interfering with the zinc, then it is possible that the gel works better simply because its zinc is NOT being interfered with. A lozenge with no citric acid (which presumably would taste awful) might work just as well as the gel. Therefore we cannot assume that the gel works better because cold virus is in the nose. It may be the lack of citric acid that makes the gel work better.

Therefore C is correct.
_________________

--

Chris Black
Web Content Editor
Knewton, Inc.


View Knewton's latest discount for GMAT Club members.
Sign up with Knewton and get all GMAT Club tests for free


Image

General Discussion
Director
Director
User avatar
Joined: 25 Aug 2007
Posts: 730
WE 1: 3.5 yrs IT
WE 2: 2.5 yrs Retail chain
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 27 Apr 2010, 08:25
2
IMO C.

Premise 1: Sucking the zinc lozenges has been proved useful treatment but research refutes this claim.

Premise 2: Since the gel contains zinc in the same form and concentration as the lozenges.

Conclusion: Cold virus is in nose, not in mouth.

We have to find that it is not because of virus in nose rather some other factor which is making zinc lozenges less effective for showing consistant effects. Only C survives the test.

zz0vlb wrote:
Though sucking zinc lozenges has been promoted as treatment for the common cold, research has revealed no consistant effect. Recently,however, a zinc gel applied nasally has been shown
to greatly reduce the duration of colds. Since the gel contains zinc in the same form and concentration as the lozenges, the greater the effectiveness of the gel must be due to the fact that cold virus tend to concentrate in the nose, not the mouth.

Which of the following, if true , most sesiously weakens the argument?

A. Expiremental subjects who used the zinc gel not only had colds of shorter duration but also had less sever symptoms than did those who used a gel that did not contain zinc.
B. The mechanism by which zinc effects the viruses that caused the common cold has not been conclusively established.
C. to make them palatable, zinc lozenges generally contains other ingredients, such as citric acid,, that can interfer with the chemical activity of zinc.
D. no Zinc based remedy can have any effect unless it is taken or applied within 48 hrs of the onset of cold symptoms.
E. Drug company researchers experimenting with nasal spray beased on zinc have found that it has much the same effect on colds as the gel does.





Please, I need explaination whether A or E weakens the argument, if not why??

_________________

Want to improve your CR: http://gmatclub.com/forum/cr-methods-an-approach-to-find-the-best-answers-93146.html
Tricky Quant problems: http://gmatclub.com/forum/50-tricky-questions-92834.html
Important Grammer Fundamentals: http://gmatclub.com/forum/key-fundamentals-of-grammer-our-crucial-learnings-on-sc-93659.html

Director
Director
User avatar
Joined: 25 Aug 2007
Posts: 730
WE 1: 3.5 yrs IT
WE 2: 2.5 yrs Retail chain
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 27 Apr 2010, 08:30
1
A. Expiremental subjects who used the zinc gel not only had colds of shorter duration but also had less sever symptoms than did those who used a gel that did not contain zinc. [We don't have info on other type of gel. We need to compare the results of zinc based gel and lozenges. Out of scope choice. Incorrect]

E. Drug company researchers experimenting with nasal spray beased on zinc have found that it has much the same effect on colds as the gel does. [We don't have info on other type of nasal sprays. This option is just to mislead us. Out of scope choice. Incorrect]
_________________

Want to improve your CR: http://gmatclub.com/forum/cr-methods-an-approach-to-find-the-best-answers-93146.html
Tricky Quant problems: http://gmatclub.com/forum/50-tricky-questions-92834.html
Important Grammer Fundamentals: http://gmatclub.com/forum/key-fundamentals-of-grammer-our-crucial-learnings-on-sc-93659.html

Manager
Manager
avatar
Joined: 11 Mar 2010
Posts: 55
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 27 Apr 2010, 10:15
1
zz0vlb wrote:
Though sucking zinc lozenges has been promoted as treatment for the common cold, research has revealed no consistant effect. Recently,however, a zinc gel applied nasally has been shown
to greatly reduce the duration of colds. Since the gel contains zinc in the same form and concentration as the lozenges, the greater the effectiveness of the gel must be due to the fact that cold virus tend to concentrate in the nose, not the mouth.

Which of the following, if true , most sesiously weakens the argument?

A. Expiremental subjects who used the zinc gel not only had colds of shorter duration but also had less sever symptoms than did those who used a gel that did not contain zinc.
B. The mechanism by which zinc effects the viruses that caused the common cold has not been conclusively established.
C. to make them palatable, zinc lozenges generally contains other ingredients, such as citric acid,, that can interfer with the chemical activity of zinc.
D. no Zinc based remedy can have any effect unless it is taken or applied within 48 hrs of the onset of cold symptoms.
E. Drug company researchers experimenting with nasal spray beased on zinc have found that it has much the same effect on colds as the gel does.




Please, I need explaination whether A or E weakens the argument, if not why??



wats the question source? I too picked 'A'. Argument contradict lozenges effectiveness to nasal zinc gel which reduces duration of cold, its effectiveness is due to virus concentrated in nose.
zinc gel effectiveness could be weaken by subject experiment already had cold of shorter duration, hence the gel has no effect evn applied to nose.

Not sure how 'C' weakens this zinc gel's effectiveness, it hurts lozenges effectiveness. does anyone have a strong reason??
VP
VP
avatar
Joined: 17 Feb 2010
Posts: 1049
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 27 Apr 2010, 13:58
can someone provide a detailed explanation on how (C) is correct and (A) is incorrect.
Manager
Manager
avatar
Joined: 28 Aug 2009
Posts: 141
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 29 Apr 2010, 05:26
2
A is incorrect because IT DOENSOT weaken the arg
C simply provides an alternate explanation for the occurence
Intern
Intern
avatar
Joined: 26 Mar 2010
Posts: 12
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 30 Apr 2010, 12:50
1
Hi seekmba,

A. Expiremental subjects who used the zinc gel not only had colds of shorter duration but also had less sever symptoms than did those who used a gel that did not contain zinc. - Here, the stmt compares the zinc gel with another zinc gel and not the zinc lozenges. The first part of the stmt does allure you into selecting this option but the latter part clearly deviates.

C. to make them palatable, zinc lozenges generally contains other ingredients, such as citric acid,, that can interfer with the chemical activity of zinc - here, it clearly specifies the ineffectiveness of zinc in the lozenges against the zinc in the and thus weakens the conclusion

Hope that helps,
meshtrap
Manager
Manager
avatar
Joined: 18 Mar 2010
Posts: 81
Location: United States
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 30 Apr 2010, 23:46
4
nilesh376 wrote:
wats the question source? I too picked 'A'. Argument contradict lozenges effectiveness to nasal zinc gel which reduces duration of cold, its effectiveness is due to virus concentrated in nose.
zinc gel effectiveness could be weaken by subject experiment already had cold of shorter duration, hence the gel has no effect evn applied to nose.

Not sure how 'C' weakens this zinc gel's effectiveness, it hurts lozenges effectiveness. does anyone have a strong reason??


The argument is not that zinc is effective or that one is more effective than the other. The argument is that the gel is more effective than the lozenges because the cold virus is more in the nose than the mouth.

"the greater the effectiveness of the gel must be due to the fact that cold virus tend to concentrate in the nose, not the mouth."

C is the best answer because it gives a different possible reason why the gel is more effective. It's because they add stuff that interfers the the chemical activity of the zinc.

I don't understand how "A" could be correct.
Intern
Intern
avatar
Joined: 05 Nov 2010
Posts: 40
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 16 Dec 2010, 17:08
1
Very difficult to understand exactly why c is correct.
Manager
Manager
User avatar
B
Joined: 12 Sep 2010
Posts: 232
Concentration: Healthcare, General Management
GMAT ToolKit User Reviews Badge
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 16 Dec 2010, 21:05
2
Conclusion
Cause: cold virus tend to concentrate in the nose

Effect: gel is more effective

Answer choice (C) weaken this conclusion by suggesting an alternate cause: logzenges is less effective against cold virus

Posted from my mobile device
Retired Moderator
User avatar
Status: 2000 posts! I don't know whether I should feel great or sad about it! LOL
Joined: 04 Oct 2009
Posts: 1121
Location: Peru
Schools: Harvard, Stanford, Wharton, MIT & HKS (Government)
WE 1: Economic research
WE 2: Banking
WE 3: Government: Foreign Trade and SMEs
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 18 Dec 2010, 10:48
1
+1 C
_________________

"Life’s battle doesn’t always go to stronger or faster men; but sooner or later the man who wins is the one who thinks he can."

My Integrated Reasoning Logbook / Diary: http://gmatclub.com/forum/my-ir-logbook-diary-133264.html

GMAT Club Premium Membership - big benefits and savings

Intern
Intern
User avatar
Joined: 02 Sep 2010
Posts: 32
Location: India
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 19 Dec 2010, 04:33
1
spyguy wrote:
Very difficult to understand exactly why c is correct.

IMO C is correct.

The conclusion that effectiveness of gel is because it is directly applied at nose, is weakend by the statement, that in "zinc lozenges" there are some substances along with zinc which can reduce the affect zinc would have.
_________________

The world ain't all sunshine and rainbows. It's a very mean and nasty place and I don't care how tough you are it will beat you to your knees and keep you there permanently if you let it. You, me, or nobody is gonna hit as hard as life. But it ain't about how hard ya hit. It's about how hard you can get it and keep moving forward. How much you can take and keep moving forward. That's how winning is done!

Manager
Manager
User avatar
Status: I am Midnight's Child !
Joined: 04 Dec 2009
Posts: 97
WE 1: Software Design and Development
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 25 Dec 2010, 09:33
1
zz0vlb wrote:
Though sucking zinc lozenges has been promoted as treatment for the common cold, research has revealed no consistant effect. Recently,however, a zinc gel applied nasally has been shown
to greatly reduce the duration of colds. Since the gel contains zinc in the same form and concentration as the lozenges, the greater the effectiveness of the gel must be due to the fact that cold virus tend to concentrate in the nose, not the mouth.

Which of the following, if true , most sesiously weakens the argument?

A. Expiremental subjects who used the zinc gel not only had colds of shorter duration but also had less sever symptoms than did those who used a gel that did not contain zinc.
B. The mechanism by which zinc effects the viruses that caused the common cold has not been conclusively established.
C. to make them palatable, zinc lozenges generally contains other ingredients, such as citric acid,, that can interfer with the chemical activity of zinc.
D. no Zinc based remedy can have any effect unless it is taken or applied within 48 hrs of the onset of cold symptoms.
E. Drug company researchers experimenting with nasal spray beased on zinc have found that it has much the same effect on colds as the gel does.





Please, I need explaination whether A or E weakens the argument, if not why??



IMO C !

C is my choice because it gives another reason to show why Zinc losenges is ineffective.

A strengthens the argument by showing that zinc gel was effective.
E strengthens the conclusion by showing that nasal treatment is superior to ingestion through mouth.

Hope this clarified your doubt. Feel free to PM me if not understood.
_________________

Argument : If you love long trips, you love the GMAT.
Conclusion : GMAT is long journey.

What does the author assume ?
Assumption : A long journey is a long trip.


GMAT Club Premium Membership - big benefits and savings

Manager
Manager
avatar
Joined: 06 Feb 2011
Posts: 59
WE: Information Technology (Computer Software)
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 14 Oct 2011, 10:01
Argument here is old virus tend to concentrate in the nose, not the mouth.

A does not work because, here we are not comparing nasal vs mouth zinc. Here it is basically between gel with zinc and non zinc.

E does not work because, here again comparison between gel and spray, not between nose and mouth gels.
Manager
Manager
avatar
Joined: 17 Jul 2013
Posts: 79
Premium Member
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 14 Jun 2014, 08:01
well explained mashtrap ... kudos for you :)
Intern
Intern
avatar
Joined: 23 Jun 2011
Posts: 18
Concentration: Finance, Other
WE: Information Technology (Health Care)
GMAT ToolKit User Reviews Badge
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 08 Jun 2015, 09:17
zz0vlb wrote:
Though sucking zinc lozenges has been promoted as treatment for the common cold, research has revealed no consistant effect. Recently,however, a zinc gel applied nasally has been shown
to greatly reduce the duration of colds. Since the gel contains zinc in the same form and concentration as the lozenges, the greater the effectiveness of the gel must be due to the fact that cold virus tend to concentrate in the nose, not the mouth.

Which of the following, if true , most sesiously weakens the argument?

A. Expiremental subjects who used the zinc gel not only had colds of shorter duration but also had less sever symptoms than did those who used a gel that did not contain zinc.
B. The mechanism by which zinc effects the viruses that caused the common cold has not been conclusively established.
C. to make them palatable, zinc lozenges generally contains other ingredients, such as citric acid,, that can interfer with the chemical activity of zinc.
D. no Zinc based remedy can have any effect unless it is taken or applied within 48 hrs of the onset of cold symptoms.
E. Drug company researchers experimenting with nasal spray beased on zinc have found that it has much the same effect on colds as the gel does.





Please, I need explaination whether A or E weakens the argument, if not why??


Both A and E are out of scope.

A : talks about the gel that don't contain zinc. OFS

E: talks about nasal spray,which is not of our concern. OFS

D: OFS

B: OFS

Leaving answer C.
SVP
SVP
avatar
B
Joined: 06 Nov 2014
Posts: 1877
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 11 Jun 2015, 02:16
Though sucking zinc lozenges has been promoted as treatment for the common cold, research has revealed no consistent effect. Recently,however, a zinc gel applied nasally has been shown
to greatly reduce the duration of colds. Since the gel contains zinc in the same form and concentration as the lozenges, the greater the effectiveness of the gel must be due to the fact that cold virus tend to concentrate in the nose, not the mouth.

Which of the following, if true , most seriously weakens the argument?

The argument is that zinc works better in the nose than in the mouth because the cold virus concentrates in the nose. The statement that weakens the argument will provide a different explanation for the efficacy of zinc in the nose compared to the mouth.

A. Experimental subjects who used the zinc gel not only had colds of shorter duration but also had less sever symptoms than did those who used a gel that did not contain zinc.out of scope - We are not interested in comparing zinc and no zinc, nor the specific effects of zinc.
B. The mechanism by which zinc effects the viruses that caused the common cold has not been conclusively established. The mechanism of zinc is out of scope.
C. to make them palatable, zinc lozenges generally contains other ingredients, such as citric acid, that can interfere with the chemical activity of zinc. This provides an alternative explanation for zinc's increased efficacy in the nose compared to the mouth. In the mouth zinc's efficacy is reduced by chemical activity with citric acid.
D. no Zinc based remedy can have any effect unless it is taken or applied within 48 hrs of the onset of cold symptoms. The time frame in which zinc-based remedies are applied is out of scope.
E. Drug company researchers experimenting with nasal spray based on zinc have found that it has much the same effect on colds as the gel does. There's no mention here of oral zinc remedies. This is only comparing two ways to apply zinc to the nose.
Intern
Intern
avatar
Joined: 03 Oct 2012
Posts: 28
WE: Other (Retail Banking)
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 12 Jun 2015, 07:01
The correct answer choice is C. The argument contains casualty and uses casualty as an assumption linking the premise and the conclusion. The premise says that since the amount of zinc used is same for both medications, and since effects are different. But answer choice C is introducing new information about lozenge, saying that it contains some other things that can interfere with the chemical activity of zinc.
Queens MBA Thread Master
avatar
Joined: 24 Oct 2012
Posts: 169
Concentration: Leadership, General Management
Re: Though sucking zinc lozenges has been promoted as treatment for the  [#permalink]

Show Tags

New post 15 Jun 2015, 08:47
Cause and Effect passage.
Argument says, Cause (Application of Zinc in nose not in mouth) has created an effect ( Consistent result, to tackle cold).

typical Weakener for CE passage can be any of the following
1. Alternate cause
2. Effect causing Cause
3. Effect happen before cause.

Lets try to find the above pattern in option choice.
Only Option C, gives me the alternate cause for the effect.

Hence Option c is more appropriate.
GMAT Club Bot
Re: Though sucking zinc lozenges has been promoted as treatment for the   [#permalink] 15 Jun 2015, 08:47

Go to page    1   2    Next  [ 27 posts ] 

Display posts from previous: Sort by

Though sucking zinc lozenges has been promoted as treatment for the

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.