What is the difference between JEE Main and JEE Advanced Syllabus for year 2021? What is the difference in exam patterns for JEE Main and JEE Advanced

There are a lot of similarities between JEE Mains and JEE Advanced. But still, there are some differences between the two. The admission process for top universities in engineering colleges depends on JEE Mains results. And aspirants who qualify for JEE Mains are eligible to appear for JEE Advanced. JEE Mains is held for admission in NITs, IIITs, GFTIs, and some other engineering colleges. While JEE Advanced is held for admission in 23 IITs across the country. The syllabus for JEE Mains is the whole syllabus of CBSE class 11 and 12 Physics, Chemistry, and Mathematics. But for JEE Advanced there are a few more extra topics like Thermal Physics, Electrochemistry are included. These advanced topics are excluded from JEE Mains.