Hi Mahesh,
Since you posted this in another Forum on this site, I've pasted over my response from there:
If your score goal is anything at (or above) a 600, then you're remarkably close to that score right now. If you goal is the high 600s or 700s, then you're too far away for any of those results to be practical on Test Day - so you should push back your Test Date and continue studying?
Have you had a chance to review this CAT? How many questions did you get wrong because...
1) of a silly/little mistake?
2) the question was too hard?
3) you narrowed the answers down to 2 choices and 'guessed wrong'?
4) you were low on time and had to blindly guess?
The above issues are likely what you have to 'fix' to pick up the missing points that you're after. Thankfully, the GMAT is a predictable, standardized Test, so you CAN train to score at a higher level.
GMAT assassins aren't born, they're made,
Rich