Hello Arun,

The syllabus of JEE main is almost same as that of your board(school). Generally speaking they ask about class 11th and 12th syllabus, from Physics, Chemistry and Mathematics section.

For the detailed official link to syllabus, follow the mentioned link:

https://jeemain.nic.in/WebInfo/Handler/FileHandler.ashx?i=File&ii=80&iii=Y

For more information, refer the below link:

https://engineering.careers360.com/articles/jee-main-syllabus

Hope this Helps