You can get admission in IISc for BSc through JEE Mains. Eligibility is the candidate belonging to general category must have scored at least 60% marks in JEE Mains or JEE Advance. 

The cutoff Ranks for shortlisted candidates in different categories in JEE Main stream is as follows :-

• 250(General)
• 5000(OBC-NCL)
• 5000(SC)
• 40000(ST)
• If you still have any queries feel free to ask in the comment section down below.