How difficult is it to upgrade your branch after 1 year at Thapar University?

I am assuming that you wish to change your branch to CSE as it is one of the most sought after branches at Thapar University. Mostly all the seats for CSE get filled up during the counseling, but 2 or 3 seats may remain vacant. Here are the two ways of changing your branch in Thapar University -

1. December Test- During the month of December, usually towards the end, Thapar University conducts a test to fill the vacant seats in every branch. This test offers a branch change from the 2nd semester onwards. This exam is also open to students who have completed their 1st semester in another college. The paper pattern is similar to JEE Mains but it is way easier. However, the competition is high because many candidates take this exam. For CSE, you will need a single digit rank. Some seats are reserved for the children of faculty. 
2. Year end change- For this, get an 8.5+ CGPA in your first year. Doing so is neither difficult nor easy. The subjects in the first year are easier. Try to score maximum marks in the practicals and work hard for the mid sessionals. There are few chapters in mid sessionals and scoring is easier. For the end sems, chapters are way more in number and the weightage is around 45-55%. Therefore, pay good attention to other exams as well. For CSE, the CGPA requirement soars higher than an 8.5 because of high competition. In fact, it goes to 9.2+. You will have to work very hard.

These are the two ways to get your branch changed at Thapar University. Both require hard work and dedication, especially if you wish to get into CSE.