For a career commercial pilot (airline pilot, etc.) you will need a solid, practical understanding of physical science, math, and earth science. The professional pilot 4 year degree programs usually require physics, algebra, and trigonometry. If you are interested in pursuing a flying career in India, check and see if the airlines have a cadet program. A cadet program will include all the training necessary to go from 0 flight time to airline pilot. The best part is the airline pays for the course. You will be obligated to work for them for some time, but it's a great opportunity to gain experience. If you are interested in a 4 year professional pilot program in the U.S., there are many good ones at both large and small universities.
Best of Luck!!