It is currently 19 Nov 2017, 11:07

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

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

CR - Pyrrole Molecules

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

Hide Tags

SVP
SVP
User avatar
Joined: 30 Oct 2003
Posts: 1788

Kudos [?]: 114 [0], given: 0

Location: NewJersey USA
CR - Pyrrole Molecules [#permalink]

Show Tags

New post 08 Jan 2004, 23:15
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

50% (00:00) correct 50% (02:52) wrong based on 2 sessions

HideShow timer Statistics

Folks this problem text has some grammatical mistakes. I dont want to correct it to confuse you.

12. Individual pyrrole molecules readily join together into larger molecules called polypyrroles. If polypyrroles form from pyrrole in the presence of zeolites, they do so by attaching to the zeolite either in lumps on the outer surface of the zeolite or in delicate chains within the zeolite?s inner channels. When zeolite changes color from yellow to black, it means that on or in that zeolite polypyrroles have formed from pyrrole. Yellow zeolite free of any pyrrole was submerged in dissolved pyrrole. The zeolite, turned black even though no polypyrroles formed on its outer surface.

If the statements above are true, which one of the following must on the basis of them be true?

(A) Polypyrroles had already formed on or in the zeolite before it was submerged.

(B) Lumps of polypyrrole attached to the zeolite were responsible for its color change.

(C) At least some of the pyrrole in which the zeolite was submerged formed polypyrrole chains.

(D) None of the pyrrole in which the zeolite was submerged attached itself to the zeolite.

(E) Little, if any, of the pyrrole in which the zeolite was submerged reached the zeolite?s inner channels.

Last edited by anandnk on 09 Jan 2004, 07:11, edited 1 time in total.

Kudos [?]: 114 [0], given: 0

Intern
Intern
User avatar
Joined: 01 Dec 2003
Posts: 35

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

Location: infront of my LCD
 [#permalink]

Show Tags

New post 09 Jan 2004, 15:36
i say C

For the zeolite to turn black, polypyrroles either form lumps or chains.
The zeolite turned black, but no polypyrroles lumps so it must be chains

What's the offical answer?

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

SVP
SVP
User avatar
Joined: 30 Oct 2003
Posts: 1788

Kudos [?]: 114 [0], given: 0

Location: NewJersey USA
 [#permalink]

Show Tags

New post 09 Jan 2004, 16:21
Hi sandeep
I didnt expect you to screwup on this one after all the toughies you have answered. Like they say every dog has its day. May be the beer was too mcuh to handle I guess.

Answer is indeed C.

It is frustrating that stolyar, stoolfi, titliest, geethu, dj etc gave up on me.

Kudos [?]: 114 [0], given: 0

Manager
Manager
User avatar
Joined: 29 Aug 2003
Posts: 241

Kudos [?]: 31 [0], given: 0

Location: MI
 [#permalink]

Show Tags

New post 09 Jan 2004, 19:09
anandnk wrote:
Hi sandeep
I didnt expect you to screwup on this one after all the toughies you have answered. Like they say every dog has its day. May be the beer was too mcuh to handle I guess.

Answer is indeed C.

It is frustrating that stolyar, stoolfi, titliest, geethu, dj etc gave up on me.


I guess I got lost in the zeolites... :eyes

I have to be more attentive :arh

Kudos [?]: 31 [0], given: 0

Intern
Intern
avatar
Joined: 05 Aug 2014
Posts: 9

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

Re: CR - Pyrrole Molecules [#permalink]

Show Tags

New post 11 Apr 2016, 04:21
I think C is the best option in this case.

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

Re: CR - Pyrrole Molecules   [#permalink] 11 Apr 2016, 04:21
Display posts from previous: Sort by

CR - Pyrrole Molecules

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


GMAT Club MBA Forum Home| About| Terms and Conditions| 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®.