Hello Aspirant,

The topics of JEE Main and Advance are 95% same. Topics such as Mathematical Reasoning, Semiconductors, etc. are excluded from Advance Syllabus. However, nothing is excluded from chemistry. So you gotta study everything in Chemistry.

TOPICS EXCLUDED FROM JEE ADVANCE SYLLABUS BUT ARE INCLUDED IN JEE MAIN:

• Magnetism and matter
• Diffraction and Polarisation (Wave Optics)
• Electromagnetic waves
• Electronics and communication system
• Linear inequalities
• Height and distance
• Principle of mathematical induction
• Set
• Relation
• Statistics
• Mathematical reasoning

If you are a JEE 2023 aspirant, visit the link below to see the official pdf of JEE 2023 syllabus:

https://jeeadv.ac.in/misc/jee-advanced-2023-syllabus.pdf

If you are a JEE 2022 aspirant, visit the link below to see the JEE Advance 2022 syllabus:

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