Hello,

You can join NDA by taking the Examination conducted by Union Public Service Commission (UPSC). This exam is conducted twice a year in all major cities throughout India. For Air force NDA examination you have to study mathematics, general knowledge, physics and english. I think you know what subjects you have to study for this examination.

All the best .

Dear Aspirant

I hope you are doing well

Yes biology and social science  comes in nda  .In the below section  in table you get it easily

Read the following table to get to know about GAT Distribution:

GAT Distribution

If you want to know more about it check out the link given in below https://competition.careers360.com/exams/nda#syllabus i hope it helps

Thank you