hi,

see its necessary to have mathematics in 10+2 level to apply for certain courses in iit jam, also you need to complete your graduation from relevant stream., if you dont meet the eligibility criteria your application is chances to be rejected, however there is some subjects where there is no restrictions of having math in 10+2, you may apply for those course.

you may follow the below link to know in details,

https://university.careers360.com/articles/jam-eligibility-criteria