Hi Vipul. The entrance paper for BA Economics hons will only have part A with 100 multiple choice questions. I’ve attached two links below. First one is the syllabus for your entrance exam and the second link is for previous years question paper.

https://www.jmi.ac.in/upload/programme/ets_fss_eco_ba_economics.pdf

https://examyou.com/blogs/detail/jmi-2016-sample-paper-previous-year-question-papers-solved-paper-modal-paper-download-pdf