Hi, I have done graduation with 49.5%. Am I eligible to apply for online MBA in HR?

Yes, you can apply for PGDBA in HR 2 year course: http://www.scdl.net/distance-learning-universities-in-business-administration-finance-marketing-HR-operations-CRM.aspx.

Online MBA is provided by different institutes in India. You may have to first find out which institutes in which provide the same. After that you can ask them for the eligibility criteria. The scores must not matter much only the skills and abilities would be checked but you need to ask for the sam