Live GMAT classes with Target Test Prep start Nov 21 and Nov 22. First class free.

See classes
Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

Newsweek Readers’ Choice Awards 2026 winner: Target Test Prep, #1 Test Prep

Target Test Prep was voted #1 Best Test Prep in the 2026 Newsweek Readers’ Choice™ Awards.

★★★★★5.0563 reviews
GMATLiveTeachStarts Nov 22
Josh Braslow, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 22 · Josh Braslow
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemandStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemandStart anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions

Sulfur Dioxide

Expert replies
by sivaelectric » Wed Jun 01, 2011 9:32 am
Smelling of rotten eggs, sulfur dioxide is formed in smokestacks from sulfur and oxygen, two of the major elements consumed in coal smelting, react with each other.
  • A. sulfur dioxide is formed in smokestacks from
    B. sulfur dioxide is created when
    C. sulfur dioxide is formed in smokestacks, and when
    D. sulfur dioxide, formed in smokestacks when
    E. sulfur dioxide, formed in smokestacks from
If I am wrong correct me :), If my post helped let me know by clicking the Thanks button ;).

Chitra Sivasankar Arunagiri
Join the discussion
Source: — Sentence Correction |

by Ozlemg » Wed Jun 01, 2011 9:36 am
IMO C

For me, "is" and "when" are missing words
Last edited by Ozlemg on Wed Jun 01, 2011 9:37 am, edited 1 time in total.
Join the discussion

by sivaelectric » Wed Jun 01, 2011 9:37 am
Sorry this is supposed to be a sentence correction questions :( wrong forum
If I am wrong correct me :), If my post helped let me know by clicking the Thanks button ;).

Chitra Sivasankar Arunagiri
Join the discussion

by abhi0697 » Wed Jun 01, 2011 2:05 pm
IMO D, "when" is the correct usage here. between B and D, I will go with "formed" rather than "created" in this sentence
Join the discussion

by hardikm » Wed Jun 01, 2011 3:18 pm
D,E is incorrect as it forms fragments
A is incorrect, wrong idiom from ... and...
C is incorrect,
IMO B : But it drops out some info so not a strong contender but no other choices are good enough and grammatically correct.
Join the discussion

by sivaelectric » Wed Jun 01, 2011 7:06 pm
OA B, though its missing some words out, its the only one with the correct grammar construction. It connects the first and the last so well. :)
If I am wrong correct me :), If my post helped let me know by clicking the Thanks button ;).

Chitra Sivasankar Arunagiri
Join the discussion

by cans » Wed Jun 01, 2011 8:54 pm
'when' should be used instead of from. eliminating a,e
c) incorrect because of 'and'
doubt between B&D but 'is' is missing in D
Thus IMO B
Join the discussion

by HSPA » Wed Jun 01, 2011 9:30 pm
I think I am reading from school that sulfer and oxygen combine to "form" sulpherdioxide. 'Creation' is like hurting me here.
Smelling of rotten eggs == Sulferdioxide.. this is ackward...

Can you kindly ping Brian@Veritas for this as you mentioned the source is Veritas... I am doubting this question.
sivaelectric wrote:Smelling of rotten eggs, sulfur dioxide is formed in smokestacks from sulfur and oxygen, two of the major elements consumed in coal smelting, react with each other.
  • A. sulfur dioxide is formed in smokestacks from
    B. sulfur dioxide is created when
    C. sulfur dioxide is formed in smokestacks, and when
    D. sulfur dioxide, formed in smokestacks when
    E. sulfur dioxide, formed in smokestacks from
First take: 640 (50M, 27V) - RC needs 300% improvement
Second take: coming soon..
Regards,
HSPA.
Join the discussion

by aftableo2006 » Thu Jun 02, 2011 4:44 am
B is the correct answer but there are some typo errors
Join the discussion

by sivaelectric » Thu Jun 02, 2011 8:31 am
There is not a typo. This is what is mentioned in the material. Even I had the same doubt.
If I am wrong correct me :), If my post helped let me know by clicking the Thanks button ;).

Chitra Sivasankar Arunagiri
Join the discussion

by aspirant2011 » Thu Jun 02, 2011 9:28 am
HSPA wrote:I think I am reading from school that sulfer and oxygen combine to "form" sulpherdioxide. 'Creation' is like hurting me here.
Smelling of rotten eggs == Sulferdioxide.. this is ackward...

Can you kindly ping Brian@Veritas for this as you mentioned the source is Veritas... I am doubting this question.
sivaelectric wrote:Smelling of rotten eggs, sulfur dioxide is formed in smokestacks from sulfur and oxygen, two of the major elements consumed in coal smelting, react with each other.
  • A. sulfur dioxide is formed in smokestacks from
    B. sulfur dioxide is created when
    C. sulfur dioxide is formed in smokestacks, and when
    D. sulfur dioxide, formed in smokestacks when
    E. sulfur dioxide, formed in smokestacks from
agree with you,when I first went through option B, I kept it aside because of the word "created"
Join the discussion

by sanabk » Thu Jun 02, 2011 2:46 pm
Is it ok to omit "formed in smokestacks" in answer choice B???
Join the discussion

by aspirant2011 » Fri Jun 03, 2011 8:49 am
sanabk wrote:Is it ok to omit "formed in smokestacks" in answer choice B???
in option B where is "formed in smokestacks"????????[/b]
Join the discussion

by sameerballani » Fri Jun 03, 2011 3:50 pm
What's the issue in case created is used in place of formed.
We can eliminate all the other options because of some or the other reason.
And even using created doesn't change the meaning of the sentence, therefore i feel there should not be any problem using it.
Can we have expert comments please.

Thanks
Join the discussion

by aspirant2011 » Sat Jun 04, 2011 8:44 am
sameerballani wrote:What's the issue in case created is used in place of formed.
We can eliminate all the other options because of some or the other reason.
And even using created doesn't change the meaning of the sentence, therefore i feel there should not be any problem using it.
Can we have expert comments please.

Thanks
Hi Sameer,

Can you please explain why exactly is D wrong,though I feel that if in D preposition "is" would have been there then it would have been the best choice out of 5 but now also whats exactly wrong with option D.....

Smelling of rotten eggs, sulfur dioxide is formed in smokestacks from sulfur and oxygen, two of the major elements consumed in coal smelting, react with each other.

D. sulfur dioxide, formed in smokestacks when

I think above part in Green is acting as a modifier and modifies sulfur dioxide.............somebody in the above post mentioned that D is having fragments and is therefore, wrong but I am confused on the same as I don't find any issue related to the fragmentization..........
Join the discussion