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 .

The NIOS Class 12 certificates, whether obtained through on-demand or public exams, are accepted by NITs and other top-level colleges. As a recognized board, NIOS ensures that its certificates are valid and hold the same value as those from other educational boards. This acceptance allows students to pursue higher education at prestigious institutions. NIOS provides a credible and legitimate path for students aiming for admission to reputable colleges and universities.

Dear

According to the information yes, you can definitely go with the National Institute of Open Schooling (NIOS) to complete your Class 12th. NIOS is a recognized board and is considered equivalent to other boards like CBSE. Many students choose NIOS for various reasons, and it won't create any issues related to JEE Advanced eligibility.

You can enroll in NIOS for your Class 12th. They offer flexibility in terms of exam schedules and subjects.

Once you successfully pass your NIOS Class 12th exams, you will be eligible to appear for JEE Advanced, provided you meet all other eligibility criteria.

Thanks.

Dear

According to information Once you passed the 12th from any board you can't give fresh exam again. Unless you can go for the improvement exam from cbse or nios depending upon you.

Now the jee advance is registered with Aadhar number so you are unable to cheat the system with more chances.

Thanks.

No, Basic Mathematics in 10+2 is not eligible for becoming a commercial pilot in India.  To become a commercial pilot in India, you need Physics and Mathematics (Standard or Applied) as mandatory subjects in your 10+2 education.

NIOS (National Institute of Open Schooling) is a legitimate option to complete your missing subjects.Earning a Standard Mathematics (not Basic Maths) certificate from NIOS along with Physics would fulfill the eligibility criteria for commercial pilot training.

If feasible, consider re-appearing for your 10+2 exams with Physics and Maths as subjects.This might be a quicker option compared to NIOS.

https://school.careers360.com/exams/nios-class-12

I hope it helps!