Hello Shashikala. Given below is the official website of bhu where all the information regarding admission in BHU is given for bsc hons in various subjects. Kindly refer it for detailed knowledge. Good luck.

https://www.google.com/url?sa=t&source=web&rct=j&url=http://www.bhu.ac.in/syllabus/BSc_syllabi.pdf&ved=2ahUKEwjSpNHo19fjAhXPbSsKHacoBG8QFjAKegQICBAB&usg=AOvVaw3fWIEZhNYyxyK-Bh2DwBYp&cshid=1564319434814