Hello Bijoy,
As you have not mentioned the College or University you are applying for, in your course, so here I am giving you a general idea of the entrance exam pattern for Master's in History (DELHI UNIVERSITY):

1.There will be100 questions.
2.All the questions will be ofMultiple choices.
3.There will be one option correct.
4.For every incorrect response, there will be anegative marking.
5.Maximum marks will be400.
6.For each correct answer, the candidate will get4 marks.

If you want precise information, you can please mention the college or University you are applying to.
Hope this helps! :)