Hi Varnita Singh, 

The eligbility of admission to Banaras Hindu University for B.Com is that candidates must have  Commerce/ Economics/ Maths/ Computer Sc./Finance/Financial Markets Management/Vocational courses (related to Commerce) as one of the subjects at 10+2 level with the required percentage (which is 50%).The admissions shall be made strictly on the basis of merit index in the BHU Undergraduate Entrance Test. 

Read up more about the course and college at Careers 360 using the link given below: https://www.google.co.in/search?client=opera&q=bcom+bhu+careers+360&sourceid=opera&ie=UTF-8&oe=UTF-8