Looking to improve my GMAT score from 690 to 740

Hi kaushik.kashyap26@gmail.com,

If you are planning to reappear for the GMAT, you can increase your score by drilling down deep.

SC: The questions test various concepts such as S-V agreement, modifiers, parallelism etc. Find out what troubles you.
As a general guide line, you can start solving a question by taking the following things in consideration:

1. Find out the subject and the verb
2. See that the S&V agree in number
3. Look out for the modifiers
4. Look out for parallelism
5. Look out for usage of certain words - such as vs like, few vs less etc.

CR: There might be certain types of questions that are troubling you. May be Assumption, may be conclusion, inference etc.
You need to find that out and then practice them
RC: This again can be drilled down into different types of questions and also different topics. See what questions and topics trouble you the most and then practice accordingly.
Quants: Again try to break the questions in topics such as Algebra, Number system (very important), Geometry, PnC etc.

You can get a profile overview on the Consultants section of GMAT Club.