Hi Tarun,
I understand your problem. The verbal part is especially tricky because some of the answers are very alike and just a little nuance can make the difference. You have to try to eliminate answers and be aware of the boundaries of the question, that is, don't analyse all of them: rather try to discard the ones that you think are not likely to be correct. It sounds obvious, but if you start scrutinizing you will help yourself save time to think of the correct one.
I would suggest going over the GMATreview official guide. It will give you very good tips on the verbal section and essay writing.
In addition, you should take as many mock tests as you can in order to rationalise the common mistakes you make and get faster with the elimination process I mentioned before.
Check this software:it is extremely useful to proceed to your training:
Watch the MasterGMAT video.
https://www.youtube.com/watch?v=QBNZczg84tU
I hope this helps you!
MJ
The MBA Center London