hello

to apply for iisc exam, following is the eligibility criteria:

• Candidates should have passed 12th or equivalent qualifying examination.

• Physics, Chemistry and Mathematics should have been studied by the candidates as compulsory subjects.

• Those candidates who did Biology, Electronics, Statistics, Computer Science etc along with Physics, Chemistry and Mathematics will also be eligible.

• Should have scored at least 60% mark in 12th standard examination.

since you don't have mathematics as a compulsory subject, you can't apply for this i.e., pcm are compulsory subejcts.

hope this helps