You can score much much better by just holding the grip on each and every topic of your 11th and 12th. If you are preparing for some other competitive exam then it will be very easy for you to score high in CGPET.

The questions in the paper are of board level or sometimes of lower level too. Physics and mathematics are just basic ones but chemistry can proof somewhat typical. It is not like that it is difficult but it is asked from a wide range of topics. So it may prove somewhat typical.

Nonetheless just revise your concepts and keep determination if you are aiming for it. Comment for some queries.