It is currently 18 Oct 2017, 11:56

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

Nuclear fusion is a process whereby the nuclei of atoms are

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

Hide Tags

VP
VP
User avatar
D
Status: Long way to go!
Joined: 10 Oct 2016
Posts: 1180

Kudos [?]: 882 [0], given: 53

Location: Viet Nam
GMAT ToolKit User Premium Member CAT Tests
Nuclear fusion is a process whereby the nuclei of atoms are [#permalink]

Show Tags

New post 23 Sep 2017, 03:03
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

81% (01:24) correct 19% (01:29) wrong based on 57 sessions

HideShow timer Statistics

Nuclear fusion is a process whereby the nuclei of atoms are joined, or “fused,” and in which energy is released. One of the by-products of fusion is helium-4 gas. A recent fusion experiment was conducted using “heavy” water contained in a sealed flask. The flask was, in turn, contained in an air-filled chamber designed to eliminate extraneous vibration. After the experiment, a measurable amount of helium-4 gas was found in the air of the chamber. The experimenters cited this evidence in support of their conclusion that fusion ad been achieved.

Which one of the following, if true, would cast doubt on the experimenters’ conclusion?

(A) Helium-4 was not the only gas found in the experiment chamber.
(B) When fusion is achieved, it normally produces several by-products, including tritium and gamma rays.
(C) The amount of helium-4 found in the chamber’s air did not exceed the amount of elium-4 that is found in ordinary air.
(D) Helium-4 gas rapidly breaks down, forming ordinary helium gas after a few hours.
(E) Nuclear fusion reactions are characterized by the release of large amounts of heat.

Source: LSAT
[Reveal] Spoiler: OA

_________________

Actual LSAT CR bank by Broall

How to solve quadratic equations - Factor quadratic equations
Factor table with sign: The useful tool to solve polynomial inequalities
Applying AM-GM inequality into finding extreme/absolute value

New Error Log with Timer

Kudos [?]: 882 [0], given: 53

Manager
Manager
User avatar
S
Joined: 31 May 2015
Posts: 63

Kudos [?]: 32 [0], given: 111

GMAT ToolKit User
Re: Nuclear fusion is a process whereby the nuclei of atoms are [#permalink]

Show Tags

New post 24 Sep 2017, 03:11
I am winking on answer C as I am breathing ordinary air with plenty of helium 4....Anyone disagrees...
_________________

GMAT loosers are born not made !!!

Kudos [?]: 32 [0], given: 111

Director
Director
avatar
G
Joined: 14 Nov 2014
Posts: 598

Kudos [?]: 94 [0], given: 46

Re: Nuclear fusion is a process whereby the nuclei of atoms are [#permalink]

Show Tags

New post 24 Sep 2017, 05:54
agree ..C is the right answer as it cast a doubt that helium released was from nuclear reaction or not.

Kudos [?]: 94 [0], given: 46

BSchool Forum Moderator
User avatar
P
Joined: 26 Feb 2016
Posts: 1450

Kudos [?]: 593 [0], given: 16

Location: India
Concentration: General Management, Leadership
WE: Sales (Retail)
Premium Member CAT Tests
Re: Nuclear fusion is a process whereby the nuclei of atoms are [#permalink]

Show Tags

New post 24 Sep 2017, 07:26
This is pretty straight forward!

We have to cast a doubt on the conclusion of the experimenter that the
Helium-4 gas formed during the experiment is formed due to the experiment.
But, if we consider Option C(The amount of helium-4 found in the chamber’s air
did not exceed the amount of Helium-4 that is found in ordinary air)
, then the
conclusion is weakened
_________________

Stay hungry, Stay foolish

2017-2018 MBA Deadlines

Class of 2020: Rotman Thread | Schulich Thread
Class of 2019: Sauder Thread

Kudos [?]: 593 [0], given: 16

Re: Nuclear fusion is a process whereby the nuclei of atoms are   [#permalink] 24 Sep 2017, 07:26
Display posts from previous: Sort by

Nuclear fusion is a process whereby the nuclei of atoms are

  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®.