jee main average exam weightage

Hello student there's no weightage per chapter wise but there's weightage of question section wise total number of questions is 75 from physics chemistry and mathematics 25 questions from each section.
As per past year question papers you can analyse that 60 percent comes from class 12 and around 40 percent question comes from class 11.
For more updates refer to the link mentioned below
https://www.google.com/amp/s/engineering.careers360.com/articles/jee-main-exam-pattern

You can also subscribe for careers360 knockout package which will help you in preparing and qualifying the entrance examination -
https://learn.careers360.com/knockout-jee-main-april/

Feel free to comment if you have any doubt
Good luck