Dear Nitish, JNU provides previous year question papers on its official website. If you search it you will definitely find the last year papers. I am sharing you the link of official website.

https://www.google.com/url?sa=t&source=web&rct=j&url=https://admissions.jnu.ac.in/searchquestionpaper.aspx&ved=2ahUKEwiH-PjdzMDjAhWUTX0KHRx9AHAQFjAAegQIAxAB&usg=AOvVaw1X9teD3g6GLC0JnR1_V6Yq

All the best

Hope this helps