Hello,

I hope you are doing fine, First of all, IISc actually doesn't offer B. Tech at all . It offers Bachelor of Science (Research) which is a four year programme. You can choose engineering electives in the 4th, 5th and 6th semesters followed by a research project in the last two semesters. IISc Bangalore takes admission on the basis of JEE main ,JEE advance ,KVPY and NEET UG. The cut off would be more than 95%ile.

I hope you find this information helpful. I wish you all the best for your future.

Good Luck