Hey there,
So you didnt mention which exam you applied for but no worries let me clear your doubts.
IISER accepts JEE advance Score. For General Category the rank should be within 10000 to get into CRL(Common Rank List) and for candidates belonging to the reserved category (OBC-NC, SC, ST, PD), their category rank should be within 10000. And you can also apply with KVPY score. But they also check 10+2 results. and you will be happy to know your score is good to apply for it. The only thing that you need is a valid score of an all india entrance exam.
The minimum requirement of 10+2 marks is 431(GEN) which is 86.2%.
You can go to their official website to check your score criteria. https://www.iiseradmission.in/eligibility/#E480
And
all the best.
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