Hello Aspirant,

See maximum number of attempts allowed for JEE-Main to any candidate is 12 (4 session consecutively for 3 years i.e. 4*3=12) and these 12 attempts get started from the very first appearance of candidate for class 12th examination from any of the recognized board.

So for e.g., if you passed class 12th in 2021 then you were eligible for all 4 attempts of JEE-Main 2021 and now you are eligible for 4 attempts of JEE-Main 2022 and 2023. So if you go for any improvement from CBSE board then you can appear for JEE-Main only till 2023 not after that.

JEE-Main eligibility criteria is mentioned below :-

1--- Age criteria :- There is no age limit to appear in JEE-Main but note that there might be the age limit in any particular institution taking admission through JEE-Main score, so you should keep this thing in mind.

2--- Qualifying Examination :- To be eligible for JEE-Main one should have passed 10+2 examination with Physics, Mathematics as mandatory subjects along with one of the Chemistry/Biotechnology/Biology/ Technical Vocational subject from any of the recognized central or state board.

3--- Year of qualification :- For JEE-Main 2022 only those candidates who have passed Class 12 / equivalent examination in 2020, 2021 or 2022; or those who will be appearing in Class 12th / equivalent examination in 2022, would be eligible to appear.

So if you follow all above criterion then you are definitely eligible for JEE-Main.

For more details kindly check out the link given below :-

https://engineering.careers360.com/articles/jee-main-eligibility-criteria

As you are preparing for JEE-Main so I am enlisting down some best books for your preparation which you can use for your preparation :-

@Physics

• Concepts of Physics-H. C. Verma
• Fundamentals of Physics-Halliday, Resnick and Walker
• Problems in General Physics-I. E. Irodov
• University Physics-Freedman and Young
• Understanding JEE physics series-DC Pandey
• Problem In Physics-SS Krotov

@Mathematics

• Higher Algebra-Hall and Knight
• Coordinate Geometry-S.L. Loney
• Differential and Integral Calculus-N. Piskunov
• Calculus and Analytic Geometry-Thomas and Finney
• IIT Mathematics for JEE Main & Advanced-M.L. Khanna
• Course in Mathematics for IIT-JEE-Tata McGraw Hill publication
• Problems Plus in IIT Mathematics-A Das Gupta
• Trigonometry-S L Loney

@Chemistry

• Modern Approach to Chemical Calculations-RC Mukherjee
• Organic Chemistry-Solomons and Fryhle
• Concise Inorganic-J. D. Lee
• Organic Chemistry-Morrison and Boyd
• University Chemistry-Freedman and Young
• Physical Chemistry-N Awasthi
• Arihant's Practice Book Chemistry for JEE Main And Advanced-R.K Gupta

You can also check out the JEE-Main knockout package for preparation of JEE-Main from the link given below :-

https://learn.careers360.com/jee-main-coaching/?utm_source=%20QnA

I hope this information helps you.

Good Luck!!