Hi Aditi,

Thanks for putting up the query. You must thorough the syllabus of the undergraduate course in political science. Do not leave any topic. Also, practice solving previous years question papers. You can find MA in Pol sc. question paper of 2017 by visiting the link below:

http://bhuonline.in/pdfs/PET_2017/M.A%20Poltical%20Sc.pdf

For more details on the entrance exam of BHU PET click on BHU PET