Hello Arvind.

Congrats for ur good performance in the UCEED. Now u should be focussing in performing best in the boards exam as that is only the left required eligibility for u to get admissioned in the IITs .

U should be scoring more than 94% to get seat in the IIT Bombay and 92% for IIT GUWAHATI. With ur rank u can expect good courses will be provided for u.

Hope it helped u. Ask if any query.

Good luck