there is any way to become scientist in isro with Msc chemistry .. still I don't have maths at 12th level and also not at bsc level
In ISRO there is very rare chance to become scientist after msc chemistry more jobs available for b.tech and msc physics students.applications invited for Msc chemistry scientist post released once in a while on ISRO website under section vacancies.
A written test is conducted by ISRO for the scientist post followed by personal interview and one thing which is considered for final selection is your academic record.
Hope it helps!!