Hi Aditya!

Yes definitely, you can study Aerospace engineering even if you have more marks in biology than mathematics. As per the eligibility criteria of aerospace engineering candidate must have completed 12th with physics, chemistry and mathematics subject as mandatory subjects with minimum aggregates (minimum percentage varies from college to college, but atleast candidatemust have 50% in 12th). To know more, visit here:

https://www.careers360.com/courses/aerospace-engineering-course

Thankyou!