Hi Nikhil. You have not mentioned your current class, so I am hoping that you may be in 12th. If you are asking for Jawaharlal Nehru University, then you have to qualify in its entrance exam. JNU conducts several entrance exams every year and after completing your 12th you can take admission in BA(Hons) in different languages like Chinese, Korean, Spanish,etc. All you have to do is pass the entrance test with good marks. For any further queries check this website.

https://www.careers360.com/exams/jnu-entrance-exam

All the best for your future!!