Hi Rishabh

There are three ways to get a seat in IISER which are as follows-

KVPY Channel

Candidates having a valid KVPY fellowship commencing from 2019-20 academic session are eligible to apply for admissions. Additional cut-off criteria for marks obtained in 10+2 board examination is also applicable.

JEE-Advanced Channel

Candidates in General category securing a rank within 10000 in the Common Rank List (CRL) of JEE Advanced 2019 are eligible to apply. For candidates belonging to the reserved category (OBC-NC, SC, ST, PD), their category rank should be within 10000. Additional cut-off criteria for marks obtained in 10+2 board examination is also applicable.

SCB Channel

Students who have passed 10+2 level with science stream in 2018 or 2019 are eligible to apply for admissions and appear for IAT 2019.

However, they will be considered for admissions to the degree programmes only if they obtain the cut-off marks specified for their board.

Students applying through SCB channel will have to appear in the IISER Aptitude Test (IAT) which will be conducted at various centres across the country.

Hope this helps you