I'm done my diploma in engineering Will I give exam of jee main for iit
UPDATE: B.Tech applications open at Manipal Institute of Technology Apply Now
Your diploma in Engineering has no weightage for entering into IIT's. You need to appear for Jee and first pass Jee mains and then pass Jee advance with ranking less than 50K so as to secure a seat in IIT.
Hope I was able to solve your query.
To get admission into IITs is quite tough. You have clear JEE Advanced entrance exam. And after that GD and PI round are held on the basis of merit list. And for clearing JEE Advanced, you have to clear JEE Mains. You can check the details about eligiblity for JEE Advanced on the link https://engineering.careers360.com/articles/jee-advanced-eligibility-criteria.
All the best!!