You can definitely improve... you should hope for 20-30 points in that time frame. Anything else would be a serious jump.

Yes...Thanks for the reply... But when I saw the review ( of my answers and explanations given), most of the mistakes I made were "silly" mistakes ; mistakes that I could have avoided if I had a bit more time.No doubt I need to practice more . But finally , it comes to tackling time . How to tackle time pressure ? And since there are (37+41=78 nearly 80) questions , I assume about 10 points for each right answer(since the total score is 800).I know this is not the way the computer evaluates the score.But is this method atleast approximate ? Also, does this mean that if I get 4 or 5 more questions right , my score would be near 690 or 700 approx?