Hello,
First of all to get a seat in any IIT you have to write JEE-Advanced and to attempt JEE-Advanced one have to qualify in JEE-Main according to category cutoff.
So some of the important topics for JEE Advanced are
Subjects
Topics
Mathematics
Trigonometry
Integral Calculus
Differential Calculus
Vectors
Analytical Geometry
Algebra
Physics
General Physics
Thermodynamics
Optics
Modern Physics
Mechanics
Electricity and Magnetism,
Chemistry
Physical Chemistry
Organic Chemistry
Inorganic Chemistry
For further more details go to the link provided
JEE Advanced important tips and guidelines
https://engineering.careers360.com/articles/jee-advanced-2020
JEE Mains cutoff to qualify for JEE Advanced
https://engineering.careers360.com/articles/jee-main-cutoff
Hope this helps
Thank You!
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