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

It is currently 15 Feb 2019, 23:58

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 February
PrevNext
SuMoTuWeThFrSa
272829303112
3456789
10111213141516
17181920212223
242526272812
Open Detailed Calendar
  • Free GMAT Strategy Webinar

     February 16, 2019

     February 16, 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.
  • $450 Tuition Credit & Official CAT Packs FREE

     February 15, 2019

     February 15, 2019

     10:00 PM EST

     11:00 PM PST

    EMPOWERgmat is giving away the complete Official GMAT Exam Pack collection worth $100 with the 3 Month Pack ($299)

Scientists examined diamonds that were formed on Earth about 2.9

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

Hide Tags

 
Director
Director
avatar
V
Joined: 30 Jan 2016
Posts: 921
Location: United States (MA)
Reviews Badge
Scientists examined diamonds that were formed on Earth about 2.9  [#permalink]

Show Tags

New post 14 Feb 2018, 08:16
4
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

67% (02:00) correct 33% (02:10) wrong based on 292 sessions

HideShow timer Statistics

Scientists examined diamonds that were formed on Earth about 2.9 billion years ago. These diamonds had a higher-than-normal concentration of sulfur-33. This concentration can be explained only by certain chemical reactions that are stimulated by ultraviolet light. If there had been more than a trace of oxygen in Earth's atmosphere 2.9 billion years ago, then not enough ultraviolet light would have reached Earth 's surface to stimulate the chemical reactions.

The information above most strongly supports which one of the following?

(A) Most diamonds with higher-than-normal concentrations of sulfur-33 were formed at least 2.9 billion years ago.
(B) Ultraviolet light causes the oxygen in Earth's atmosphere to react chemically with sulfur-33.
(C) Earth's atmosphere contained very little, if any, oxygen 2.9 billion years ago.
(D) Sulfur-33 is rarely found in diamonds that were formed more recently than 2.9 billion years ago.
(E) The formation of diamonds occurs only in the presence of ultraviolet light.

Source: LSAT

_________________

Non progredi est regredi

Intern
Intern
avatar
B
Joined: 15 Jul 2014
Posts: 16
Premium Member
Re: Scientists examined diamonds that were formed on Earth about 2.9  [#permalink]

Show Tags

New post 14 Feb 2018, 08:52
C- Argument says that if there is any oxygen, then UV light would not have passed through atmosphere. So, it is obvious that there is no/little amount of oxygen present to allow uV light to stimulate chemical reaction.

Sent from my Pixel using GMAT Club Forum mobile app
VP
VP
User avatar
V
Status: It's near - I can see.
Joined: 13 Apr 2013
Posts: 1393
Location: India
Concentration: International Business, Operations
Schools: INSEAD Jan '19
GMAT 1: 480 Q38 V22
GPA: 3.01
WE: Engineering (Real Estate)
Premium Member Reviews Badge
Re: Scientists examined diamonds that were formed on Earth about 2.9  [#permalink]

Show Tags

New post 11 Apr 2018, 23:31
1
Akela wrote:
Scientists examined diamonds that were formed on Earth about 2.9 billion years ago. These diamonds had a higher-than-normal concentration of sulfur-33. This
concentration can be explained only by certain chemical reactions that are stimulated by ultraviolet light. If there had been more than a trace of oxygen in Earth's
atmosphere 2.9 billion years ago, then not enough ultraviolet light would have reached Earth 's surface to stimulate the chemical reactions.

The information above most strongly supports which one of the following?


1. Oxygen does not allow the UV rays to reach earth.
2. More UV rays, more stimulation and more sulfur-33.
3. So if more sulfur - 33 found in diamonds 2.9 billions years ago, this means more UV rays were reaching earth's surface.


This implies that less oxygen was present at that time. (C) is the correct answer.


(A) Most diamonds with higher-than-normal concentrations of sulfur-33 were formed at least 2.9 billion years ago.

(B) Ultraviolet light causes the oxygen in Earth's atmosphere to react chemically with sulfur-33.

(C) Earth's atmosphere contained very little, if any, oxygen 2.9 billion years ago.

(D) Sulfur-33 is rarely found in diamonds that were formed more recently than 2.9 billion years ago.

(E) The formation of diamonds occurs only in the presence of ultraviolet light.
_________________

"Do not watch clock; Do what it does. KEEP GOING."

CR Forum Moderator
avatar
D
Joined: 25 Apr 2018
Posts: 403
Premium Member Reviews Badge CAT Tests
Re: Scientists examined diamonds that were formed on Earth about 2.9  [#permalink]

Show Tags

New post 03 Sep 2018, 07:58
Akela wrote:
Scientists examined diamonds that were formed on Earth about 2.9 billion years ago. These diamonds had a higher-than-normal concentration of sulfur-33. This
concentration can be explained only by certain chemical reactions that are stimulated by ultraviolet light. If there had been more than a trace of oxygen in Earth's
atmosphere 2.9 billion years ago, then not enough ultraviolet light would have reached Earth 's surface to stimulate the chemical reactions.

The information above most strongly supports which one of the following?

(A) Most diamonds with higher-than-normal concentrations of sulfur-33 were formed at least 2.9 billion years ago.
(B) Ultraviolet light causes the oxygen in Earth's atmosphere to react chemically with sulfur-33.
(C) Earth's atmosphere contained very little, if any, oxygen 2.9 billion years ago.
(D) Sulfur-33 is rarely found in diamonds that were formed more recently than 2.9 billion years ago.
(E) The formation of diamonds occurs only in the presence of ultraviolet light.

Source: LSAT


Hey nightblade354

Please reformat the stimulus.Sorry to bug you

Thanks!
_________________

Please give kudos if you found my posts helpful!

Project CR Butler - 2 CR's everyday

CR & LSAT Forum Moderator
User avatar
D
Status: He came. He saw. He conquered. -- Studying for the LSAT -- Corruptus in Extremis
Joined: 31 Jul 2017
Posts: 467
Location: United States
Concentration: Finance, Economics
Reviews Badge
Re: Scientists examined diamonds that were formed on Earth about 2.9  [#permalink]

Show Tags

New post 03 Sep 2018, 08:04
gmat1393 wrote:
Akela wrote:
Scientists examined diamonds that were formed on Earth about 2.9 billion years ago. These diamonds had a higher-than-normal concentration of sulfur-33. This
concentration can be explained only by certain chemical reactions that are stimulated by ultraviolet light. If there had been more than a trace of oxygen in Earth's
atmosphere 2.9 billion years ago, then not enough ultraviolet light would have reached Earth 's surface to stimulate the chemical reactions.

The information above most strongly supports which one of the following?

(A) Most diamonds with higher-than-normal concentrations of sulfur-33 were formed at least 2.9 billion years ago.
(B) Ultraviolet light causes the oxygen in Earth's atmosphere to react chemically with sulfur-33.
(C) Earth's atmosphere contained very little, if any, oxygen 2.9 billion years ago.
(D) Sulfur-33 is rarely found in diamonds that were formed more recently than 2.9 billion years ago.
(E) The formation of diamonds occurs only in the presence of ultraviolet light.

Source: LSAT


Hey nightblade354

Please reformat the stimulus.Sorry to bug you

Thanks!


Fixed.

-- Mod Nightblade
_________________

D-Day: November 18th, 2017

Need a laugh and a break? Go here: https://gmatclub.com/forum/mental-break-funny-videos-270269.html

Need a CR tutor? PM me!

Manager
Manager
User avatar
S
Joined: 21 Jul 2017
Posts: 192
Location: India
Concentration: Social Entrepreneurship, Leadership
GMAT 1: 660 Q47 V34
GPA: 4
WE: Project Management (Education)
Premium Member Reviews Badge
Scientists examined diamonds that were formed on Earth about 2.9  [#permalink]

Show Tags

New post 13 Oct 2018, 06:12
This stimulus presents a set of facts about research into the sulfur content of diamonds formed on Earth about 2.9 billion years ago. It turns out that the diamonds had a higher-than-normal concentration of sulfur-33.

First, only certain chemical reactions, stimulated by ultraviolet light, can account for the higher-than-normal concentration of sulfur-33 found in the diamonds. This is a conditional relationship.

Sufficient =>Necessary

Next, we are given another conditional relationship: “if there had been more than a trace of oxygen in Earth’s atmosphere 2.9 billion years ago, then not enough ultraviolet light would have reached Earth’s surface to stimulate the chemical reactions.”

Pre-thinking:
This chain provides the additive inference that if diamonds have a higher-than-normal concentration of sulfur-33, then it must be the case that there was not more than a trace of oxygen in Earth’s atmosphere 2.9 billion years ago:

Choice (A): The stimulus discussed only the chemical composition of certain diamonds, which were known to have been formed about 2.9 billion years ago.
This answer choice goes beyond that evidence by making an inference about most diamonds with higher-than-normal concentrations of sulfur-33.

Choice (B): It contains several relevant pieces of information but is incorrect since it places those pieces into unsupported relationships.

Choice (C): This is the correct answer choice. Reflects the additive inference described above.

Choice (D): The stimulus did not tell us anything about the chemical composition of diamonds formed more recently than 2.9 billion years ago, so this statement is out of scope.

Choice (E): This answer choice mistakes the role played in the stimulus by ultraviolet light, which stimulated chemical reactions necessary for the higher-than-normal concentrations of sulfur-33 in the diamonds. The stimulus did not state that the presence of ultraviolet light was necessary for the formation of diamonds generally.

-----------------------------------------------
Please hit Kudos if you find the post useful!
Manager
Manager
avatar
S
Joined: 21 May 2017
Posts: 67
Location: India
Premium Member CAT Tests
Re: Scientists examined diamonds that were formed on Earth about 2.9  [#permalink]

Show Tags

New post 15 Oct 2018, 09:33
Akela wrote:
Scientists examined diamonds that were formed on Earth about 2.9 billion years ago. These diamonds had a higher-than-normal concentration of sulfur-33. This concentration can be explained only by certain chemical reactions that are stimulated by ultraviolet light. If there had been more than a trace of oxygen in Earth's atmosphere 2.9 billion years ago, then not enough ultraviolet light would have reached Earth 's surface to stimulate the chemical reactions.

The information above most strongly supports which one of the following?

(A) Most diamonds with higher-than-normal concentrations of sulfur-33 were formed at least 2.9 billion years ago.
(B) Ultraviolet light causes the oxygen in Earth's atmosphere to react chemically with sulfur-33.
(C) Earth's atmosphere contained very little, if any, oxygen 2.9 billion years ago.
(D) Sulfur-33 is rarely found in diamonds that were formed more recently than 2.9 billion years ago.
(E) The formation of diamonds occurs only in the presence of ultraviolet light.

Source: LSAT



C is the answer as it can be properly inferred from the argument .
GMAT Club Bot
Re: Scientists examined diamonds that were formed on Earth about 2.9   [#permalink] 15 Oct 2018, 09:33
Display posts from previous: Sort by

Scientists examined diamonds that were formed on Earth about 2.9

  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®.