Hello.

Important chapters in chemistry are:.
atomic structure
Chemical bonding
Electro chemistry
Solid state
Complex compounds
Chemical kinetics
Solutions&colligative properties
Surface chemistry
S-- block
Equilibrium
Bio molecules, polymers and chemistry in every day life. (Questions asked from this areas are very easy)
Carboxilic acids&aldehydes
Redoox reactions

Note: for organic chemistry SN sanyal (reactions, reagents &rearrangements) is preferable.., for reference