Hi Saksham.....

These are the topics which are important for Chemistry Paper Jee mains 2019.

Very Important Topics:

General Organic Chem -around 9%

Alcohol Phenols and Ethers -around 7%

Redox Reactions -around 6%

Chemical Bonding -around 5%

Coordination Chem -around 5%

Inorganic Chem -around 10%

Aldehyde and Ketones -around 5%

Solutions -around 5%

Solid State -around 5%

Important Topics:

Chemical Thermodynamics -around 5%

Ionic Equilibrium -around 3%

Chemical Equilibrium -around 3%

Surface Chemistry -around 3%

Periodic Classifications -around 2%

Atomic Structure -around 2%

Metallurgy -around 2%

Hello, 

These are the important chapters of chemistry that have significant weightage in JEEMAINS

• 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 this helps......