Pilot eligibility

To become a commercial pilot:
1. You need to first possess a student pilot license. You must be over 17 years of age and have completed 12th in science (Physics and mathematics) with 50%.
2. Your vision in one eye must be perfect. In general medical terminology, it is called 6/6 eyesight. In the other eye, you could have an imperfection of 6/9, which must be correctable to 6/6.
3. General physical fitness is mandatory. You must be free of any disease that can hamper normal function.
4. You need to register at a flying club which is recognised by Directorate General of Civil Aviation (DGCA), Government of India.
5. Next is a private pilot license which includes sixty hours of flying. A commercial pilot license may be obtained only after a PPL and 250 hours of flying.
Some of the institutes offering commercial pilot training are:
1. Academy of Carver Aviation Private Limited, Pune.
2. All India Institute of Aeronautics, Dehradun.
3. Center for Civil Aviation Training (CCAT), Delhi.
4. Glorietta Aviation, Ghaziabad.
5. Fly Wings Aviation Private Limited, Mumbai.
For more details, you may refer to the link mentioned below:
https://hospitality.shiksha.com/commercial-pilot-training-in-india-categorypage-6-87-301-0-0-1-1-2-0-none-1-0#page-top

There is no special courses for railway driver, but you have to complete ITI to become a railway driver.
ABOUT ITI
its a 2 year course,which trains the candidate to work in automobile sectors
ELIGIBILTY ~
10th pass with math and science.
ELIGIBILITY TO BECOME A LOCO PILOT
EDUCATIONAL QUALIFICATION
atleast matriculation with ITI course in specified trades.
AGE
18 - 30 year. for the general candidates.
age relaxation are being given to the reserved categories.
HOW TO BECOME A DRIVER
1. for becoming a railway driver you have to apply for the competative exam held for the job whenever declared by any of the 17 RRB'S of different zones in indian railway.
2. after clearing the exam the required tranning is been given.
3. you will be posted as a assistance loco pilot first on goods train then passenger train and at last express train.
4. after some years of experience you will be appointed as a loco pilot.
PAY SCALE ~
starting salary is 4000 - 5000 + incentives.

Hi Ishanuj,
You must have a minimum of 55% PCM in class 12th. If you are going to take your flying classes from government flying schools there will be an entrance test conducted by the Director General Civil Aviation or the DGCA. Being a pilot requires a lot of specialized technical training at various levels. In brief, the first level is that of a Student Pilot License (SPL), which allows the student to learn. After getting some training the student is provided with a Private Pilot License (PPL), which allows him to captain an aircraft without passengers. After gaining some training and experience he has to qualify for the Commercial Pilot Licence (CPL), which allows him to captain an aircraft with passengers. This license is provided by the Directorate General of Civil Aviation. The CPL endorses what aircraft you can fly. Most importantly you must be physically fit and you must undergo a medical test. Please read my article here:
https://www.shiksha.com/aviation/flying-pilot-training/articles/career-in-commercial-flying-all-you-need-to-know-blogId-13472#blogCommentSection