Firstly Congratulations on your JEE Main result.

Having a SC Category Rank of 612, will ensure any any of the three circuital branches, CSE, EE or ECE at NIT Nagpur ( Home State Quota), through JOSAA Counselling. If distance is not a concern, you can perhaps choose Circuital Branches at NIT Trichy, Warangal, Surathkal or Calicut.

As far as Maharashtra DTE Counselling is Concerned a CRL of 12207 and SC Rank of 612 in JEE Main will guarantee you a seat in either of College of Engineering Pune or VJTI Mumbai in any of the top branches. If you are interested in Chemical Sciences do give a thought to ICT Mumbai.

For more information and college prediction on detailed basis of JEE Main Rank, please follow the link below

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer