Hello Aspirant,

Unfortunately your are not eligible for NDA 1 2021, the reason being is, as per the eligibility criteria released by UPSC for NDA 1 2021, the candidate should have passed his class 12th and if appearing for class 12th then should submit the proof of passing the 12th class or equivalent examination by the prescribed date i.e. 24th December, 2021. So if you are going to appear for class 12th in this year then you will be eligible for NDA 1 2022 because by December 24th 2021 you cannot produce your proof of passing class 12th as the class 12th examinations will be conducted in the year 2022 for your current session. Also note that to apply for Army Wing of National Defence Academy one should pass the 12th Class of the 10+2 pattern of School Education or equivalent examination conducted by a State Education Board or a University. Similarly for Air Force and Naval Wings of National Defence Academy and for the 10+2 Cadet Entry Scheme at the Indian Naval Academy one should be 12th Class pass with Physics, Chemistry and Mathematics of the 10+2 pattern of School Education or equivalent conducted by a State Education Board or a University. For complete notification released by UPSC for NDA 1 2021 kindly visit the official website of UPSC as given :- National Defence Academy and Naval Academy Examination (I), 2021 | UPSC (https://www.upsc.gov.in/examinations/%20National%20Defence%20Academy%20and%20Naval%20Academy%20Examination%20%28I%29%2C%202021)

I hope this information helps you.

Good Luck!!