No you are not eligible for NDA exam because the minimum educational qualification is 12th standard so first of all complete your 12th standard.
NDA exam conducted by the UPSC two times in a year.
The candidate should have to complete a 12th standard from a recognized university.
You must be a citizen of INDIA.
Percentage is not required.
Final year exams appearin candidates are also eligible.
You must be physically fit .
Only male candidates and unmarried candidates are eligible.
Girls are not eligible.
The candidates age should be in between 16.5 to 19 years.
No upper age relaxation.
Best of luck.