I am doing 1st year B.Tech. What is the procedure of changing the college?

Yes, there is a provision of changing college, but the condition are- 1. Both college should come under same university. 2. Both college should agree with acceptance of NOC, as one of the college you are leaving will have loss of fee, you deposit for the course. 3. You should have good score

Yes, you can change your college after 2nd semester, and before that you need to talk to your college administrator about the same. So, he could help you get all the necessary document along with result of 2 semesters.