Hello Aakriti

Don't worry,to get admission in Banaras Hindu University,you have to appear for BHU UET and for B.com (//B.com) Hons they don't ask for marks in any specific subjects,they ask for overall marks in class 12th.As per BHU UET eligibility criteria for B.com (//B.com) Hons, The candidate should have scored 50% as minimum aggregate in 10+2 or equivalent examinations with  Commerce / Mathematics /Economics/ Financial Markets Management/Finance Computer Science/Vocational courses as one of the subjects

I Hope This Helps

Best Of Luck For The Exam!!!