• 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

Hello Student,

Important chapters in chemistry for JEE Mains are as follows-

• Chemical Bonding and Molecular Structure
• Chemical Thermodynamics
• Electrochemistry
• Inorganic Chemistry ( most important part for jee main )
• Organic Chemistry( xiith class oganic chemisty is more imporant,full scoring )
• Polymers and Bio Molecules
• Environmental Chemistry
• Chemistry in Everyday Life

Hope it helped you

Thank you