No you are not eligible to apply for Indian Air force after 12th with age of 22 year .. NDA exam required maximum age 19 year and CDS examination required minimum BSC graduation level degree to join Indian air force …

NDA exam requirements :
For Army wing of National Defence Academy :-
12th Class pass of the 10+2 pattern of School Education or equivalent examination conducted by a State Education Board or a University.

Age limit
16 ½ to 19 Years

Combined Defence Services Examination
Educational Qualifications:
Air Force Academy B.Sc. with Physics and/or Mathematics or Bachelor of Engg
Age-limits:
19-23 Years Air Force Academy