Hi,

The eligibility criteria for pursuing bachelor of science in IISC requires candidates to pass their 10+2 level in that year or the previous year. Also students appearing in class 12 boards whose result is not declared yet can also apply. They should also secure 60% marks from science stream with PCM. Students who have studied biology, electronics, statistics, computer science etc. alongwith PCM are also eligible.

As such there is no number of attempts stated by IISc.