Hello kiranveer!!!
Your percentage of PCB class 12 is very good. This shows that you are a hard working student and you have a good command on PCB.
Talking about IISER, a student must be excellent at mathematics to clear this exam. There is a vast syllabus of mathematics after class 10th. So, you have skipped a major part which will prove to be a difficult task to cover up.
Hence, it is quite not possible to clear it without maths.
Your maths should be strong enough to clear this level of exam.
If you really wish to crack this exam, then start learning the formulas from NCERT. Atleast, you will be able to solve formula based questions. Try to score maximum possible score in maths.
Give more time on solving chem, physics and bio. You should be more inclined towards these subjects.
Get a decent overall score.
All the best!!!
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