Hi Deshmukh, Here is the thing, The qualification needed - Student should have cleared 12th or equivalent exam with Physics or Mathematics subjects. NDA exam is totally based on General ability test and Mathematics.

General ability test has two part - Part A is English (Vocabulary, comprehension, grammar etc), Part B is general Knowledge (Current affair, history, physics, chemistry, GS, geography)

Mathematics (Trigonometry, calculus, algebra, Integral calculus and differential equation, statistics, probability etc)

So, Bio student can give NDA exam and Mathematics is compulsory

Hope i gave answer to your query... gud luck

For Air Force, Navy and Naval Academy of National Defence Academy - A candidate must have passed class 12th/HSC with Physics and Mathematics conducted by a State Education Board or a University.

To check the complete eligibility, you can go through the below link -

https://competition.careers360.com/articles/nda-eligibility-criteria

Good Luck!!!!