DAV College, Chandigarh

Hello Rohan, DAV is perhaps the best known college and as a result priority of most students is this college. I am afraid due to this it seems difficult that you may get admission. But keep trying till last round. Best wishes.

Yes, you are eligible for top colleges for B.Com.

Hello Mrinalee,
Yes, of course. What matters are the marks scored in graduation for admission to PG courses. Of course many universities have started conducting entrance exams for admission to PG courses. If you show same flair in this entrance exam then your chances will improve further.
Best wishes.

No, you can't apply. You need to have 50% marks in 12th.

Yes, you can get admission as you are eligible for admission. -
Please visit the link to keep yourself updated: https://davchd.ac.in/.

For M.Sc zoology, you should have done your graduation in zoology. You will have to give entrance exams for taking admission in any college for completing your Masters. Check the dates or the entrance exam and the eligibility along with the syllabus and start your preparations accordingly.

Yes, you can get admission if you have scored 55% in 12th.