Pilot Training

First, you have clear your 12. Get above 60%. You need to be perfect in mathematics first. You need to have basic knowledge for becoming a pilot.

Process of admission in Pilot Training course and institute after 12th science- In case you have passed 12th Science, you may join a CPL (Commercial Pilot Licence) training program if you meet the above mentioned educational and medical standards. You may approach private institutes, fill forms and get started.
For further information about admission in 'Adventure Flight Education, Chennai - Pilot Training' please visit
https://www.shiksha.com/college/adventure-flight-education-bangalore-koramangala-54689

You should apply as soon, as it is possible, because the more you wait the more you lose. So, apply as soon as possible go to the respective website and filled application form with the required information.

Yes, you can do Aircraft Maintenance Engineering A.M.E. After complete your B.Tech degree. But, here no special treatment for them.

Hello Om, Considering the reputation of these two Institutions, I would prefer Hindustan. But then opinions differ from person to person. In case the latter is convenient to you, then can think of that. Best wishes to you.

60 lakhs + if you have financial capability then only go for the job because loan won't help you.

Dear Dixith,
Yes, it is valid. The NIOS Certificate is just valid like other educational boards like CBSE, ICSE and others. You can surely apply for the Airline Institution after your NIOS studies.