hai.

academic qualification of REAP:

Passed 10+2 or equivalent with Science from Board of Secondary Education Rajasthan (BSER), CBSE or any equivalent exam with minimum 45% marks (40% in case of SC/ST/OBC - NCL/ MBC -NCL candidates from the state of Rajasthan) in aggregate with Physics and Mathematics as compulsory subjects, and any of Chemistry/ Computer Science/ Biotechnology/ Biology as optional subject.The candidate must also get pass marks in each of these subjects individually.

and with your rank in jee main:

you have high chance in these colleges:

• dream institute of technology
• guru nanak institute of technology
• bengal institute of technology
• academy of technology,hooghly
• calcutta institute of engineering and management 

have medium chance in :

• bankura unnayani institute of engineering
• netaji subhash enginerring college

you can also try for these colleges also even if the the chances are low:

• meghnad saha institute of technology
• the neotia university
• college of engineering and management, kolaghat.

thank you and good luck