Hi Aspirant,

Hope you are doing great as per the question asked by you. Please mention your marks and category also so that we can predict it more accurately ,Since the actual cutoffs are never declared by the IISERs', you can never know  ,IISER just tells you if you're selected or not. However, according to some candidates personal experiences. For general category student, marks about 110/180 will be excellent to get into any IISER.

Hope you found this answer useful. Stay motivated stay positive.

All the best!