Hi,

If you want to appear for undergraduate course, then yes you will have to give entrance exams based in that particular language too. For example EFLU is an         Institute in India which have its entrance exams for it's courses in which a part of the exam is based on that particular language.

If you want to learn a language for your professional development and not as you main career option, then you can refer to different language centers which teach the language you want to learn. A lot of mobile applications offer these courses which are free of cost too.

You can refer to this link for details on professional courses: https://www.careers360.com/courses/foreign-language-course

I hope this helped you.