IISC UG admission based on the merit list of one of the following National Examinations KVPY, JEE Main, JEE Advance, NEET UG. You can also check the eligibility & other information with the given below link.

https://www.iisc.ac.in/ug/info_brochure.html

IIT Kanpur offers BS programme, The Admissions to this programme is made through Joint Entrance Examination-Advanced (JEE-Advanced). You can check the further information with the given below link.

https://www.iitk.ac.in/doaa/under-graduate-programme

Good Luck!