Hello student placement vary from college to college and branch to branch in which candidates pursue their graduation. Generally the average placement of an IIT graduate student is around 12-16 LPA (lakh per annum).
Placement may vary on the basis of your academic performance during the course and skills.
Eligibility IIT - Candidates must passed or appearing class 12 with physics chemistry and mathematics with minimum 75 percent marks aggregate from a recognized board.
I request you to please help me with your preferable IIT you're concerned about so that I can check and provide you the exact information.
Feel free to comment if you have any doubt