Candidates aiming to seek admission under IISc BS Admission 2017 are required to have studied Physics, chemistry and mathematics in their 10+2. It is mandatory to have these three subjects in 10+2. The selection of candidates will be made on their clearance of anyone of the entrance exam that is KVPY, JEE Main or JEE Advanced.

To know more about the eligibility criteria, you can go through below article -
IISc BS Eligibility Criteria 2017

Hope this helps!!!