I have wasted time in my class 11 is there any still chance to get seat in iit

Hii Gavara!
Yes, There still a good chance, given that, you pay your full attention, from now onwards, in studies and don't waste time any further. Only focus forwards your goal. If you practice well you will definately achieve the goal. Know the syllabus well. Work hard but also smart. Solve previous year question papers and clear all the basics. Revise daily. Set a strict timetable. Stay away from distractions and take care of your health.
Hope this helps.
Good luck!