In order to take admission for MA history programme you need to appear JNU Entrance Exam. The exam will be in subjective & objective mode. You can check the syllabus of the exam with the exam with the given below link.

https://admissions.jnu.ac.in/prospectus/jnuee/SSS%201.pdf

As per the eligibility you should have completed your Bachelor's Degree in any discipline under 10+2+3 academic pattern securing at least 45 percent marks in aggregate of all subjects.

You can check the previous year papers with the given below link.

https://admissions.jnu.ac.in/searchquestionpaper.aspx

Good Luck!