Yes. If you want to study in an IIT, you need to appear for both JEE Mains and JEE Advanced. JEE Advanced is the entrance examination for admission to IITs, NITs and GFTIs. To be eligible for JEE Advanced, you need to qualify in JEE Mains. For more information on JEE Advanced please visit our page at: https://engineering.careers360.com/articles/jee-advanced

Now for JEE Mains, you need to have completed your 10+2 in Physics, Chemistry and Mathematics. If your goal is IIT, you should secure a minimum aggregate of 75% in your 10+2. For more information, on JEE Mains, please visit our page at: https://engineering.careers360.com/exams/jee-main