NDA

Pathfinder 2018 For NDA Entrance Examination by Your Book Publication
National Defence Academy Examination Upkar Prakashan by Upkar Prakashan
Mathematics for NDA and NA By R S Aggarwal.

If you are still eligible, then you can fill the form. Check your eligibility criteria here. https://www.shiksha.com/exams/nda.

Yes, you are eligible for NDA exam this year onward. For a detailed information you can visit this link. https://www.nda.nic.in/eligibility criteria. Html.

No, it's not necessary. But, you do not have to be married. Only unmarried or single peple are eligible.

Basically, your class 12th marks don't make a key role in your further career. Do choose your interest course. My suggestion is choose agricultural BA.

Hi,
You can apply for NDA until 19 years of age so you should apply for the exam this year.

Yes, physics, chemistry are included in the paper-2 (general aptitude) of NDA exam. Best of luck.

No, you can not get 10+2 certificate on the basis of your Diploma course.

Hello Mrunal,
Good to see your passion for National Defence Academy. For joining NDA, you must have to pass your 12th boards. I'm attaching a link which will help you in every possible way.
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/exams/amp/nda/preptips&ved=2ahUKEwjT_NeHu4ThAhVTjuYKHbThDHwQFjASegQIAhAB&usg=AOvVaw1hH2HEQA55ZXCry6WtIdcJ&cf=1
All the best.

Hello Praneeth,
Its very good to see that you're looking forward for National Defence Academy. NDA is a very tough examination you need to have a proper statergy to crack this examination. I am attaching a link which will definitely help you to know more about this examination and how to prepare for it. https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/exams/amp/nda/preptips&ved=2ahUKEwjT_NeHu4ThAhVTjuYKHbThDHwQFjASegQIAhAB&usg=AOvVaw1hH2HEQA55ZXCry6WtIdcJ&cf=1
All the best.