WHICH TOPICS SHOULD I COVER MORE IN PHYSICS TO SCORE MORE THAN 120+MARKS . AND FOR CHEMISTRY ALSO ..??
thorough yourself with following chapters.
semiconductor chapter , electromagnetic and ac current , current electricity , electrostatic ; vectors ; 2D motions .
Don't miss out thermodynamics also.
Topics in chemistry;
Chemical bonding and molecular structure ; general organic chemistry , p block elements , hydrocarbons , atomic structure , aldehyde and ketones ; periodic table and classification of elements.
For entrance exams try to solve more and more MCQs.

AND THANKS FOR HELPING ME..