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

It is currently 16 Jan 2019, 02:08

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 in January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
  • The winning strategy for a high GRE score

     January 17, 2019

     January 17, 2019

     08:00 AM PST

     09:00 AM PST

    Learn the winning strategy for a high GRE score — what do people who reach a high score do differently? We're going to share insights, tips and strategies from data we've collected from over 50,000 students who used examPAL.
  • Free GMAT Strategy Webinar

     January 19, 2019

     January 19, 2019

     07:00 AM PST

     09:00 AM PST

    Aiming to score 760+? Attend this FREE session to learn how to Define your GMAT Strategy, Create your Study Plan and Master the Core Skills to excel on the GMAT.

GMATPREP ChallengeQ-Solar ponds are bodies of water in which circulati

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

Hide Tags

 
Manager
Manager
avatar
S
Joined: 12 Mar 2017
Posts: 234
Location: India
Concentration: Strategy, General Management
GMAT 1: 630 Q49 V27
GPA: 4
Re: GMATPREP ChallengeQ-Solar ponds are bodies of water in which circulati  [#permalink]

Show Tags

New post 01 Mar 2018, 07:12
8mins and 30 seconds. All correct
Intern
Intern
avatar
B
Joined: 24 Jan 2018
Posts: 10
Re: GMATPREP ChallengeQ-Solar ponds are bodies of water in which circulati  [#permalink]

Show Tags

New post 29 Mar 2018, 22:26
Why is it assumed that microorganisms always contaminate water?

I'm fine with the reasoning that there is some other cause of algae's death, that weakens the conclusion. But microorganisms contaminating the water and hence, weakening the conclusion doesn't look convincing enough, especially when we don't know whether they contaminate water.
Intern
Intern
avatar
B
Joined: 17 Aug 2018
Posts: 18
GMATPREP ChallengeQ-Solar ponds are bodies of water in which circulati  [#permalink]

Show Tags

New post 29 Dec 2018, 20:29
Below is the explanation for question no 4.

The conclusion of the author in the 4th Paragraph is "A recent experiment has supplied a more promising
method for controlling the algae.".

Option C is implying that algae was controlled due to an alternate reason hence weakening the conclusion of the author.

I think, I deserve kudos :D
_________________

Spread some happiness..Press Kudos! :)

Manager
Manager
avatar
B
Joined: 22 Sep 2018
Posts: 138
Re: GMATPREP ChallengeQ-Solar ponds are bodies of water in which circulati  [#permalink]

Show Tags

New post 30 Dec 2018, 12:31
4/4 took about 9 minutes including reading the passage. Here's my reasoning if it helps anyone:

P1) solar water -> different temperatures (bottom hot + more saline, top = cooler but transparent to shoot solar energy into the bottom)

P2) potential as renewable energy source, but algae interfere. Need light to shine all the way down to bottom layer to work

P3) cannot use algae killers because of risk of easy contamination

P4) describes one method that could be successful in creating solar water

1) A is the only one that is relevant here. The entire passage talks about how algae interferes with solar water development as a renewable energy source and a potential solution for this problem.

2, 3) all discussed above in passage summary

4) The only one that would undermine the validity of the experiment would be if you added some other thing to kill the algae. For ex. if D were true, you could still run this method and the algae would die. If you were to run this experiment elsewhere and DID NOT add the micro organisms this experiment would not work again. Hence answer is C.
Manager
Manager
avatar
B
Joined: 01 Nov 2018
Posts: 55
GMAT 1: 690 Q48 V35
GPA: 3.88
Reviews Badge CAT Tests
Re: GMATPREP ChallengeQ-Solar ponds are bodies of water in which circulati  [#permalink]

Show Tags

New post 02 Jan 2019, 16:27
9:00min 4/4. Easy read with only one tough question (Last one). A few enticing options but only choice C introduces another factor that may have led to the demise of the algae. Wish I could speed up my timing on RC but I know my accuracy will fall quite a bit. Thankfully, I've shaved off 15 seconds on sentence correction questions :)
GMAT Club Bot
Re: GMATPREP ChallengeQ-Solar ponds are bodies of water in which circulati &nbs [#permalink] 02 Jan 2019, 16:27

Go to page   Previous    1   2   [ 25 posts ] 

Display posts from previous: Sort by

GMATPREP ChallengeQ-Solar ponds are bodies of water in which circulati

  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®.