Dear Aspirants ,

Yes it is mandatory for everyone aspirants those are wants to join ISRO they must be go through the exam only like ICRB and if you had 7.5 Cgpa then congrats for the score but you also go through ICRB exam but if you had good sores then you had some benefiters like may be you secure good scores in ICRB exam   .

Hope it will helpful

thanks