Yes, you can still fill out the NDA form even if you failed 12th class. The NDA eligibility criteria for educational qualification state that you must have passed a 10+2 exam or equivalent. There is no restriction on the number of attempts you took for 12th board exams.Since you have not passed 12th yet,  mention yourself as a "12th Appearing" student in the application form.

CBSE private students are valid for the NDA exam and most other competitive exams in India. There's no discrimination against private students when it comes to eligibility. The focus is on passing the qualifying exam (10+2 or equivalent) from a recognized board like CBSE.

While you can appear for the NDA with a 12th appearing status, it's crucial to pass your 12th board exams before the SSB interview stage. The SSB interview cannot be attended without a valid 12th pass certificate.Keep in mind the age limit for appearing in the NDA exam. You should be between 16.5 and 19.5 years old when you apply.

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I hope it helps!

Hello!

If you want to study English literature after your 12th standard, then you will have to enroll yourself in B.A. English honours. One has to sit for CUET-UG to get admission in any prestigious government or private institutions.

These are some of the colleges in Dehradun and Jaipur where you can study B. A. English honours:

1. Institute of Technology and Management, Dehradun
2. Shri Guru Ram Rai PG College, Dehradun
3. Kanoria PG Mahila Mahavidyalaya, Jaipur
4. NIMS School of Humanities and Social Sciences, NIMS University, Jaipur
5. St Xavier's College, Jaipur

Hope this information will help you. Thank you.

Research some other engineering colleges in India that might accept your situation. Also, check and contact the CBSE board to confirm if your complete result including NIOS maths is equivalent to a regular CBSE 12th result .