Hi reader,

the mode of getting entry in IISC is as follows:

If a candidate is in Class 12th , he/she can get entry in IISC for pursuing ug courses through KVPY , JEE ADVANCED and IAT exams

if a candidate is pursuing B.Tech B.Arch then through GATE , CAT , GMAT you can apply for masters courses.

If a candidate is pursuing B.sc he/she can get entry into IISC by appearing for KVPY SB exam.

assuming that you have passed your 12th and currently pursuing a course except B.Sc ( based on the fact that you are not able to appear for kvpy) you can not pursue the ug courses through IISC.

for more information regarding KVPY you can refer

https://engineering.careers360.com/articles/iisc-bs-admission

hope this answer helps you

thank you