JEE mains ma 11th and 12th ka haar chapter sa kitna no. ka ATA haaa that link I want

It shall be difficult to tell the weight age as such but I can help you with the important topics you can refer to.

NCERTs are your fundamental books for JEE as they help in establishing your concepts.



Observed from the pattern, some of the most important topics for JEE Main spotted in the order of their importance are:

Physics:  Electrostatics, Optics, Current Electricity, Magnetism, Nuclear Physics, Thermodynamics, Simple Harmonic Motion, Fluid Mechanics and Rotational Dynamics



Mathematics: Integration, Matrices and Determinants, Probability and Statistics, Applications of Derivatives, Vector Algebra, 3-D Geometry, Sequence and Series and Complex numbers.



Chemistry: P-block elements, Alcohol, Phenols and Ethers, Atomic structure, Co-ordination chemistry, Mole concept and Electrochemistry



Some of the recommended books are:



Physics:

• H.C Verma- For concepts and numerical practice, the book incites analytical thinking too
• DC Pandey and O.P Tondon

Chemistry:

• Numerical Chemistry (Objective book) for Physical Chemistry by P. Bahadur
• Latest edition of Arihant Organic Chemistry for additional practice as it includes questions based on existing JEE pattern
• S.N Sanyals Organic Chemistry book, NCERTs for Inorganic chemistry and Paula Bruice for Organic

Mathematics:

• Coordinate Geometry and Trigonometry book by S.L. Loney
• A DasGuptas book for subjective and objective practice
• For Calculus, refer to a book by G N Berman
• Arihant Books, Cengage, Algebra  Hall and Knight, Calculus  Thomas and Finney

Hope this helps.

Good luck!