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

It is currently 20 May 2019, 17:44

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

In 1975 Chinese survey teams remeasured Mount Everest

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

Hide Tags

 
VP
VP
User avatar
D
Status: Learning
Joined: 20 Dec 2015
Posts: 1012
Location: India
Concentration: Operations, Marketing
GMAT 1: 670 Q48 V36
GRE 1: Q157 V157
GPA: 3.4
WE: Engineering (Manufacturing)
Reviews Badge CAT Tests
Re: In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 02 May 2017, 19:01
Can any one explain why the answer for Question 32 is D instead of C .
_________________
Please give kudos if you found my answers useful
Manager
Manager
avatar
S
Joined: 24 Jan 2017
Posts: 142
GMAT 1: 640 Q50 V25
GMAT 2: 710 Q50 V35
GPA: 3.48
Reviews Badge
Re: In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 05 Jun 2017, 10:01
iliavko wrote:
I know it's useless to disagree with Official answers and all that, but please allow me,

Q32.

The official answer is D, but it says "When weather balloons indicate low air temperature and pressure." so, same level of temp and pressure.

according to the text,

"One source of error is refraction, the bending of light beams as they pass through air layers of different temperature and pressure. " so the refraction is the result of passing through DIFFERENT T and P, Therefore D just can't be correct here. ~

Am I missing something?


Hi, I would like to add my 2 cents on your concern. As per my understanding, (D) is not wrong, or if any, not wrong for the reason you cited.

First of all, in the passage: "One source of error is refraction, the bending of light beams as they pass through air layers of different temperature and pressure. ---> It is mentioned that temperature and pressure of one layer is different from those of another layer.

In option D: "When weather balloons indicate low air temperature and pressure." --->In my initial reading, I thought this sentence meant that there is a difference in air temperature and pressure of different layers. In more details, temperate and pressure of one layer is lower than those of another layer. That's why there is no inconsistence between option (D) and information given in the passage.

Btw, I've got this passage in GMATPrep practice but did not face with question no.1. And then when I attempted this question for the first time on this forum, I chose D. I must admit that IMHO this is a difficult question, but what surprised me the most is that almost everyone commented above argued for another option. I did bookmark this post to read further comments from experts.

Hi expert GMATNinja, could you share some thoughts on Question no.1? Thank you so much!
Director
Director
User avatar
G
Joined: 26 Oct 2016
Posts: 633
Location: United States
Concentration: Marketing, International Business
Schools: HBS '19
GMAT 1: 770 Q51 V44
GPA: 4
WE: Education (Education)
Re: In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 04 Jul 2017, 12:27
2
Quite a controversial question. Though, my reasoning is more inclined towards answer choice C for the first problem. But, I still don't understand how come OA is D.

A -> not an issue
B -> type of air that would cause disturbance is not mentioned
D -> see B
E -> confuses info (see C)
C -> "To reduce refraction errors, the Chinese team carried in sea level to within five to twelve miles of Everest’s summit, decreasing the amount of air that light passed through on its way to their theodolites." so they needed to get close to get a good measurement.
_________________
Thanks & Regards,
Anaira Mitch
Intern
Intern
avatar
B
Joined: 24 Jul 2017
Posts: 46
Location: India
WE: Information Technology (Computer Software)
Re: In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 09 Sep 2017, 03:43
Hi GMATNinja ,

Can you please put some light on the first question. It seems that option C makes sense but the OA is D.
Manager
Manager
User avatar
G
Joined: 18 Jun 2013
Posts: 74
Location: India
Concentration: Technology, General Management
GMAT 1: 690 Q50 V35
GPA: 3.2
WE: Information Technology (Consulting)
Reviews Badge
Re: In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 24 Nov 2017, 00:27
7 mins 20 seconds.
Got all correct.
Senior Manager
Senior Manager
avatar
P
Joined: 13 Oct 2016
Posts: 282
Concentration: Operations, Leadership
GMAT 1: 600 Q44 V28
GMAT ToolKit User
Re: In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 24 Nov 2017, 09:26
Time taken - 10 mins

Got 3/4 correct. Need to improve on the Timing!!
_________________
_______________________________________________
If you appreciate the post then please click +1Kudos :)
Verbal Forum Moderator
User avatar
V
Status: Greatness begins beyond your comfort zone
Joined: 08 Dec 2013
Posts: 2289
Location: India
Concentration: General Management, Strategy
Schools: Kelley '20, ISB '19
GPA: 3.2
WE: Information Technology (Consulting)
GMAT ToolKit User Reviews Badge CAT Tests
Re: In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 10 Dec 2017, 23:15
Took around 8 mins 20 seconds , including 4 mins to read . Got the first question incorrect . In my opinion, OA D seems contentious .

Q32. It can be inferred from the passage that refraction would be most likely to cause errors in measurements of a mountain’s elevation under which of the following conditions?

One source of error is refraction, the bending of light beams as they pass through air layers of different temperature and pressure. Because light traveling. down from a summit passes through many such layers, a surveyor could sight a mirage rather than the peak itself. To reduce refraction errors, the Chinese team carried in sea level to within five to twelve miles of Everest’s summit, decreasing the amount of air that light passed through on its way to their theodolites. The Chinese also launched weather balloons near their theodolites to measure atmospheric temperature and pressure changes to better estimate refraction errors.

A. When there are local variations in sea level -- Incorrect
B. When light passes through humid air -- Irrelevant -- the cause of refraction is passage of light through air layers of different temperature and pressure
C. When theodolites are used relatively far from the mountain peak. -- greater distance itself won't cause refraction, but with increasing distance the probability of light passing through air layers of different temperature and pressure
D. When weather balloons indicate low air temperature and pressure. -- here we have to assume that a few layers of air through which the light passes will have air temperature and pressure that is not low -- maybe normal or high ?
E. When sea level has been carried in to Within five to twelve miles of the summit. -- This was a way to reduce refraction errors that was adopted by Chinese



AjiteshArun , mikemcgarry ,daagh ,egmat , GMATNinja , sayantanc2k , RonPurewal ,ChiranjeevSingh other experts -- can you please help with Q32 ?
_________________
When everything seems to be going against you, remember that the airplane takes off against the wind, not with it. - Henry Ford
The Moment You Think About Giving Up, Think Of The Reason Why You Held On So Long
+1 Kudos if you find this post helpful
Magoosh GMAT Instructor
User avatar
S
Joined: 30 Oct 2017
Posts: 221
Re: In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 11 Dec 2017, 18:49
1
Skywalker18 wrote:
Took around 8 mins 20 seconds , including 4 mins to read . Got the first question incorrect . In my opinion, OA D seems contentious .

Q32. It can be inferred from the passage that refraction would be most likely to cause errors in measurements of a mountain’s elevation under which of the following conditions?

One source of error is refraction, the bending of light beams as they pass through air layers of different temperature and pressure. Because light traveling. down from a summit passes through many such layers, a surveyor could sight a mirage rather than the peak itself. To reduce refraction errors, the Chinese team carried in sea level to within five to twelve miles of Everest’s summit, decreasing the amount of air that light passed through on its way to their theodolites. The Chinese also launched weather balloons near their theodolites to measure atmospheric temperature and pressure changes to better estimate refraction errors.

A. When there are local variations in sea level -- Incorrect
B. When light passes through humid air -- Irrelevant -- the cause of refraction is passage of light through air layers of different temperature and pressure
C. When theodolites are used relatively far from the mountain peak. -- greater distance itself won't cause refraction, but with increasing distance the probability of light passing through air layers of different temperature and pressure
D. When weather balloons indicate low air temperature and pressure. -- here we have to assume that a few layers of air through which the light passes will have air temperature and pressure that is not low -- maybe normal or high ?
E. When sea level has been carried in to Within five to twelve miles of the summit. -- This was a way to reduce refraction errors that was adopted by Chinese

AjiteshArun , mikemcgarry ,daagh ,egmat , GMATNinja , sayantanc2k , RonPurewal ,ChiranjeevSingh other experts -- can you please help with Q32 ?


Hi Skywalker18! I'll jump in for Mike here :-)

In my opinion, this is not a very well written question, and not up to GMAT standards. As you and others have pointed out, both C and D have elements that could be considered correct. I think your analysis is correct here - for choice C, with increasing distance, there is a higher probability that light will have to pass through regions of different temperature and pressure, causing refraction. This is supported by the part of the passage that states "To reduce refraction errors, the Chinese team carried in sea level to within five to twelve miles of Everest’s summit, decreasing the amount of air that light passed through on its way to their theodolites."

For choice D, we can assume that if there is low temperature and pressure closer to the summit, there are likely different layers of temperature and pressure that the light has to travel through, which also will cause refraction errors.

So both answer choices have some merit here; again, I don't think this is a very well-written question. I wouldn't say that either C or D is substantially more supported by the passage.

Hope that's helpful! :-)
-Carolyn
_________________
Intern
Intern
avatar
B
Joined: 20 Mar 2016
Posts: 1
Re: In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 28 Mar 2018, 00:17
Q1 What is problem with option 'c'
and why 'd' is correct?
Manager
Manager
User avatar
B
Joined: 11 May 2018
Posts: 91
Location: India
GMAT 1: 460 Q42 V14
GMAT ToolKit User
Re: In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 02 Jul 2018, 05:40
This is another question that belongs to the same passage.I have come across this question in Exam pack 1.please add it.

"The passage suggests which of the following about the technique used by the Chinese in their measurement of Mount Everest?

A. The Chinese employed the same assumptions about sea level as the British but used more accurate methods.
B. The Chinese used a different instrument for measuring the difference in elevation between increments than the British had.
C. The Chinese used the same basic technique as the British, supplementing it with modern refinements to knowledge and methods.
D. Since the accuracy of the technique of carrying in sea level had been challenged, the Chinese were obliged to develop a new technique to replace it.
E. Since few advances had been made in the field of mountain surveying, the Chinese used no equipment in addition to what the British had used."


OA: C
_________________
If you want to Thank me Give me a KUDOS
"I’ve spent months preparing for the day I’d face you. I’ve come a long way, GMAT"- SonGoku
Intern
Intern
avatar
B
Joined: 13 Jun 2018
Posts: 18
Re: In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 03 Jul 2018, 23:26
i think OA for question 1 is wrong it should be C not D , nowhere in the passage it is mentioned that low air temperature and pressure causes errors .it is mentioned that light beams as they pass through air layers of DIFFERENT TEMPERATURES AND PRESSURE causes refraction.it can also be inferred from para 2 line 4 that C is the right answer
Manager
Manager
User avatar
S
Joined: 30 May 2018
Posts: 82
Concentration: General Management, Marketing
GMAT 1: 750 Q49 V45
GPA: 3.45
WE: Other (Retail)
Re: In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 10 Oct 2018, 05:09
Took 7 Minutes , got all answers correct.
Can someone help me judge my speed here ? 7 minutes too much for this passage ?
_________________
Kudos if you agree , Comment if you don't !!!
Senior Manager
Senior Manager
avatar
G
Joined: 11 Feb 2018
Posts: 277
GMAT 1: 690 Q47 V37
GMAT 2: 710 Q50 V36
GMAT 3: 750 Q50 V42
Re: In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 12 Oct 2018, 10:29
Congrats on the awesome score buddy!!!A lot of people die to get that...

This should take less than 5 min I think for those aiming above 750.I got 3/4 seeing that the first question is controversial anyways.Finished in 5:20
Manager
Manager
avatar
B
Joined: 28 Jun 2018
Posts: 74
Re: In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 21 Oct 2018, 05:42
All these OAs have been uploaded wrong.
Intern
Intern
avatar
B
Joined: 15 Jul 2018
Posts: 4
Re: In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 22 Oct 2018, 00:00
Need help in Q1 - how can it be option d? and why not option A?
Manager
Manager
avatar
B
Joined: 18 Aug 2017
Posts: 75
GMAT ToolKit User
Re: In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 20 Mar 2019, 18:14
Hi expert,

I would like to ask for OE for Q1.

Thank you.
GMAT Club Verbal Expert
User avatar
P
Status: GMAT and GRE tutor
Joined: 13 Aug 2009
Posts: 2484
Location: United States
GMAT 1: 780 Q51 V46
GMAT 2: 800 Q51 V51
GRE 1: Q170 V170
Re: In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 19 Apr 2019, 00:42
ballest127 wrote:
Hi expert,

I would like to ask for OE for Q1.

Thank you.

This one doesn't seem to actually come from an official source, so I wouldn't worry about it too much. It was originally tagged as coming from the GMAC Paper Tests, but I just searched all of the publicly available exams, and it isn't in there. I changed the source to "other" -- if someone does find the source of this passage, please take a screenshot and post it!

Until then, please don't waste too much of your precious study time worrying about it.
_________________
GMAT Club Verbal Expert | GMAT/GRE tutor @ www.gmatninja.com (Now hiring!) | Instagram | Food blog | Notoriously bad at PMs

Beginners' guides to GMAT verbal
Reading Comprehension | Critical Reasoning | Sentence Correction

YouTube LIVE verbal webinars
Series 1: Fundamentals of SC & CR | Series 2: Developing a Winning GMAT Mindset

SC & CR Questions of the Day (QOTDs), featuring expert explanations
All QOTDs | Subscribe via email | RSS

Need an expert reply?
Hit the request verbal experts' reply button -- and please be specific about your question. Feel free to tag @GMATNinja in your post. Priority is always given to official GMAT questions.

Sentence Correction articles & resources
How to go from great (760) to incredible (780) on GMAT SC | That "-ing" Word Probably Isn't a Verb | That "-ed" Word Might Not Be a Verb, Either | No-BS Guide to GMAT Idioms | "Being" is not the enemy | WTF is "that" doing in my sentence?

Reading Comprehension, Critical Reasoning, and other articles & resources
All GMAT Ninja articles on GMAT Club | Using LSAT for GMAT CR & RC |7 reasons why your actual GMAT scores don't match your practice test scores | How to get 4 additional "fake" GMAT Prep tests for $29.99 | Time management on verbal
Intern
Intern
User avatar
B
Joined: 18 Aug 2018
Posts: 9
Location: Turkey
Concentration: Strategy, Technology
GPA: 3.31
In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 20 Apr 2019, 09:29
Thanks! IEsailor
Can someone explain the second question? I made it D but OA seems to be B. Thanks.
Intern
Intern
User avatar
B
Joined: 06 Apr 2019
Posts: 12
In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post Updated on: 21 Apr 2019, 04:19
I think Question no 32 has some problems? the OA provided is wrong?
or I am not clear about the question.
Can someone explain it to me?

Originally posted by aankit on 21 Apr 2019, 00:58.
Last edited by aankit on 21 Apr 2019, 04:19, edited 1 time in total.
Manager
Manager
avatar
B
Joined: 17 Sep 2017
Posts: 64
Re: In 1975 Chinese survey teams remeasured Mount Everest  [#permalink]

Show Tags

New post 21 Apr 2019, 01:35
Hi, can anyone offer an explanation for Question 32?. Why D is the correct answer choice?
GMAT Club Bot
Re: In 1975 Chinese survey teams remeasured Mount Everest   [#permalink] 21 Apr 2019, 01:35

Go to page   Previous    1   2   [ 40 posts ] 

Display posts from previous: Sort by

In 1975 Chinese survey teams remeasured Mount Everest

  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®.