Hello Shravan,

See there is no any specific coaching or any platform that is providing full coaching for JNU entrance exam for MA in Hindi so what you should do is get thorough with your graduation syllabus and read the BA level books of Hindi Literature and for your reference I am enlisting down some books, however they are not specifically designed for JNU entrance exam but for knowledge purpose you should go through them :-

>>>>>> Hindi Sahitye ka itihas

>>>>>> Hindi Reeti Sahitya by Bhageeratha Mishra

>>>>>> Adhunik Nibandh Kosh Hindi

>>>>>> Kabeer Chinthan

As per the syllabus of JNU entrance examination the questions will be based on knowledge of main Hindi literary trends, famous authors and likewise topics.

I hope this information helps you.

Good Luck!!