I'll add to what Tim said.
Lists are only one way to use parallelism; there are lots of other ways discussed in the chapter. You may not have found a list because that may not have been the type of parallelism being tested on that particular problem.
I have not taken any tests yet, I plan to finish SC guide by 13th July and then plan to take test every week.
I disagree with Tim on this one.
This is not a good plan. CAT exams are really good for (a) figuring out where you're scoring right now, (b) practicing stamina, and (c) analyzing your strengths and weaknesses. The actual act of just taking the exam is NOT so useful for improving. It's what you do with the test results / between tests that helps you to improve.
What you want to do, instead, is take tests periodically - every 2 to 4 weeks, depending upon your study schedule - and use those results to devise a study plan until your next practice test. (FYI: it's also very important to take tests under full official conditions,
including the essays.)
So, yes, take a test now. DO NOT WORRY / CARE about your score! You don't care what the score is (you're going to get better before you take the real thing!). You care what the test allows you to diagnose about your strengths and weaknesses so that you know what to do for the next couple of weeks before you take another test! Otherwise, you're spending your time very inefficiently and you won't improve as much as you could.
It typically takes at least 2 weeks to make progress in all of the areas of weakness that you identify from a single practice test. Use the tests actively - analyze them afterwards to know what you need to improve. This article can help:
http://www.beatthegmat.com/a/2009/09/23 ... tice-tests--- I practise 25 quant and 25 DS in 40 minutes alternate days and my accuracy is around 87-90% in both sections (I have finsihed DS from OG12 and finished 145 Qn in quant).
-- I practise 20 qn in CR in 30 minutes and RC 15 qn in 30 minutes every alternate day(CR + RC) and my accuracy is around 85 %.
What you describe above is "doing" problems. There are two steps to studying: "doing" and "analyzing." Most of your learning comes from analyzing, not doing. (Analyzing is everything you review on a problem after you have finished doing the problem for the first time.)
You don't mention what you are doing to analyze your problems, or even how much time you spend analyzing your problems, so I'm guessing that you are not doing much analysis. If that is the case, then you are not learning anywhere near as much as you could learn. This article describes how to analyze practice problems:
http://www.beatthegmat.com/a/2009/10/09 ... ce-problemAnd this one describes how to learn from your errors:
http://www.beatthegmat.com/mba/2010/04/ ... our-errorsSome other ideas:
(1) This is the general process for SC:
Read the original sentence all the way through.
If you happen to spot anything problematic, examine. If it's an error, cross off A. Then scan the other choices vertically, at the same point as that error you found (do NOT read the whole answer choice), and cross off any others that repeat the same error.
Repeat the above until you've dealt with everything you happened to see on your first read-through of the original sentence (note: sometimes you won't see anything on the first read-through!).
Then, do a vertical scan of the first word of each choice. If you can identify the potential error based on the differences you see, deal with it. If not, do a vertical scan of the last word of each choice - same thing. After that, do a vertical scan starting at the beginning of each choice.
If you notice a difference when scanning but you don't know what error that difference might signify, keep going - look for a different split.
If you've dealt with everything you know how to deal with and you still have more than one choice left, pick something and move on. Don't agonize over it - just pick and go.
(2) To recognize grammar rules / errors more accurately and quickly, a useful study exercise is to take a file or notebook and make two columns. On the left-hand side, write down the name of a particular grammar error (eg, subj-verb agreement). On the right-hand side, write down what the splits tend to look like for that type of error (eg, nouns that sometimes include "s" and sometimes don't; verbs that sometimes include "s" and sometimes don't).
You can test yourself (and add to your list, above) by going back to old SC problems you've already done. Don't read the original sentence (cover it up!); look only at the answers. Compare the answers to find differences and ask yourself what kind of error MIGHT be signaled by such differences. (Note: a difference does not always mean there is an error; sometimes, a difference is what we call a "red herring." That is, they're trying to distract us with a difference to make us think there's an error when both ways are correct!)