Hello Vandana ,
Yes ,BSc Aviation is a good option if you're interested in the same as it provides information on mechanics of aircrafts and also the precautions which should be taken while you fly an aircraft and other cautionary methods or measures.And the admission process will be based on the merit score and the process will be done both online and offline mode in the months of May and June in India .To be eligible for this course ,you must pass your 10+2 or equivalent exam with a minimum aggregate of 50% marks .You must also have CLASS II medical certificate from approved  doctor for flying hours .Hope this information is helpful and good luck.