I have created [below] quizzes using the following GMATPREP question originally posted by whiplash2411:
gmat-prep-critical-reasoning-collection-106783.html

Each quiz contains 15 questions with 28 minute limit [only the quiz#7: 18 question, 33 minute]. It has some other features not relevant to GMAT CAT, but useful while practicing.

Anyone with flash in his/her computer can use the quiz. If you don't have flash: you can download it for free:

http://get.adobe.com/flashplayer/

You need to install the .exe file/s before taking the quiz/s.

7 quizzes. 108 questions. Scroll down for all the quizzes.

If it helps. Please press Kudos.

Thanks.
PS: If you find any typo, please let me know. i will fix and regenerate the file.

Attachments contain question 61-90 of the original post.

Good work BDSunDevil, i am looking forward to see more quizzes from your end, this will surely help the aspirants.
I scored 9 outta 15.
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great effort! Thanks for sharing. +5 kudos
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I blog at www.bschooladmit.wordpress.com

is it possible to hide the right answer during review? For example, a button: "show answer" to toggle between hiding or showing the correct answer. Basically I wanted to do these as review and keep time separately using walker's gmat timer. However run out of time and when it comes to doing the questions in review mode, I have the answer highlighted!

On another note, I have about a 95% hit rate with SC but I do take on average 2mins per question. (I make up for it in RC and CR) Which is why the timer is not working out for me

Nice that it has an interface, but I am concerned about the questions themselves. #1 on CR_1 is wrong, likely because of a typo in the first sentence.

This Flaw question mentions that insects have caused "dramatic INCREASES of cotton" on the world market, that cotton has a high price, and that soybean growers have decided to switch to producing cotton. This argument does not make internal sense and feels more like a Resolve a Paradox question as these two ideas conflict.

The "correct" answer essentially mentions that insecticide is safe and effective. How does this tell us that the plan is a bad idea? Sure, there is insecticide, but who would use it if the insects are causing more productivity? This is irrelevant in the argument's current form. The best answer without changes to the prompt is C, which says that there has been no sharp increase for demand in cotton. Since there is an INCREASE in cotton on the world market and no corresponding increase in demand, the growers' plan is bad.

Answer B would be a better answer if the first sentence was edited to say that insects have caused dramatic DECREASES in the amount of cotton on the world market or dramatic increases in the PRICE of cotton (what I think it is supposed to say). (don't think "increase of" is the correct idiom here anyways) This way, insecticide would be beneficial to the current cotton growers and would remedy the problem caused by the insects.

This might be the question you attempted to use: <actually GMAT Club won't let me post URLs due to lack of posts... so search for it and you will find that it says "increases in the price of cotton">

it's a typo; the question stem needs to be dramatic increases in the price of cotton. If you ever come across something like this you can very easily cross reference the question in the forums by searching as you did, (eg. Insect Infestations) and then inform BDSunDevil. Given the number of questions and the amount of data entry required, you may find a typo or two..

+1 Kudos

You really deserve it
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KUDOS is the good manner to help the entire community.

Ahh Man: just ignore it. Its an "exception of exception" of count/non-count rule, which is not covered in GMAT!

See the below link for the source and other relevant discussions.

gmat-prep-critical-reasoning-collection-106783.html
gmatprepsc-105446.html