Hi Saumya,
The Chartered Accountants Examination is considered a post graduate credential. You are eligible for an H-1B. The question of cap subject or cap exempt is determined by (1) if the qualification is from a US school and if not (2) is your prospective employer a cap exempt entity such as a research group or other 501c3 entity. For example you will be eligible for cap exemption if you offer your services to a hospital or large charities such as Susan G Komen for the Cure or National Diabetes Foundation or American Heart Association.
All the best
Dr. Sandeep Shankar, Colorado Heights University, Denver, CO 80223, USA. www.chu.edu; sshankar@chu.edu