It is very important to give extra attention to the important topics in your exam to fetch good marks as they carry more weight-age in the exam.
According to the analysis of 2017 paper below are the important topics in which you should focus more
Physics
Capacitance- 6.67%
Current Electricity- 10.00%
Calorimetry & Thermal Expansion- 6.67%
KTG & Thermodynamics- 6.67%
Rigid Body Dynamics- 6.67%
Work, Power & Energy- 6.67%
Modern Physics- 10.00%
Chemistry
Chemical Bonding- 6.67%
S-Block- 6.67%
Alkyl Hallide, Alcohol & Ether (Reaction Mechanism)- 13.33%
Mole Concept- 10.00%
Thermodynamics and Thermochemistry- 6.67%
Mathematics
Co-ordinate Geometry (3-D)- 6.67%
Application of Derivatives- 6.67%
Functions- 6.67%
Matrices & Determinants- 6.67%
Probability- 6.67%
Good Luck!!