Hi Rahul. For admission at Banaras Hindu University, Varanasi in the course b pharma (ayurveda), you need to clear the entrance examination- Banaras Hindu University 2019 entrance exam. The application form will be released in online mode. The start date of filling the form would be from second week of March,2019. And will continue till 4th week of April, 2019 . 

I hope this information has helped you:)