Hello Bharat, Yes you can apply for SCB aptitude test.

IISER admission 2019 will be conducted through three channels- KVPY, SCB and JEE

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

The online Application portal start in the fourth week of may(Tentative).

I Hope this will help you

All the best!!