hi,

see if you have passed 12th in 2020 and have applied for bachelors course, you would fall in 2020-2021 session. however due to corona pandemic the admission process  has late and same for staring of ug classes. so now its very important to get in touch with your college, faculty and fellow students to know about latest exam dates, assignment submission, mock exams and so on. I suggest you to immediately contact with college authority to know about exam related updates. many colleges has started online classes and over the year classes are going on online mode.

however you may also check the college website or particular university website.