Hello,

To be eligible to give NDA the age limit of the candidate should be between 16.5 years - 19.5 years. So yes you will be eligible to give NDA. You will get only one attempt to give NDA that is the NDA 1. The minimum qualification required for NDA is 10+2 to be eligible in Army and 10+2 with Physics and Maths to be eligible for Air Force & Navy. So you will have only one attempt as you will pass your 10+2 level in 2023.