Hello Yuvraj,

Your basics should be very clear upto 12th std. You should read the NCERT books for basics. Then OP Tendon for Physical & Inorganic Chemistry, and Organic Chemistry of "Arihant Publication" for detail or extra knowledge. 
You should also try to solve the previous years question papers, this helps too much and you should also give the mock test to rectify yourself and build your confidence level.
For preparation tips, importants topics & the best books, you can go through the link given below
Https://engineering.careers360.com/articles/jee-main-2019

Thanks for query on this platform, you may visit again
All the best for your examination.

Hi Yuvraj

Please check the link below to know how to prepare for JEE Main:

https://engineering.careers360.com/articles/jee-main-preparation-tips-for-chemistry

All the best! 

Hello Yuvraj,

The best books of Chemistry for JEE Mains are:

1. Organic Chemistry by Morrison Boyd.

2. Organic Chemistry by O.P. Tandon.

3. Inorganic Chemistry by O.P. Tandon.

4. Modern approach to chemical calculations by R.C. Mukherjee.

5. Numerical Chemistry by P.Bahadur.

6. Concise Inorganic Chemistry by J.D. Lee.

Hope this will help you. All tha the best.

• NCERT books are your bible and gita so stick to it always.
• Comprehensive Chemistry
• Organic Chemistry by M S Chouhan
• Reaction Mechanism by Mukul C Roy
• Concise Inorganic Chemistry by J D Lee
• Essential Organic Chemistry by Ranjeet Shahi
• Numerical Problems by P Bahadur