Dear Deepak,
Since you are termed as non-commerce student for your information you are eligible to join B.com(CA).Chartered Accountancy is a course of passion and dedication. Every student can pursue this course after the 12th examinations. If you are a science student till 12th or even if you are a graduate of science then also you can be a Chartered Accountant. As according to the criteria to join CA given by The Indian Institute of Chartered Accounted(ICAI) is that after 12th, you're required to qualify the Foundation course and register for intermediate. The candidates who have qualified 12th with minimum aggregate of 50% marks will be able to register for B.com(CA).
HOPE THIS INFORMATION WOULD HELP YOU!
ALL THE BEST