There are many good colleges in India in which you can do your Bachelor of Technology in Computer Science and Engineering on the basis of your class XIIth marks. Some of these colleges are as follows:

School of Aeronautics, Neemrana

Maharaja Agrasen College of Engineering & Technology

Siksa o Anusandhan University, Bhubaneswar

VelTech University, Andhra Pradesh

Sigma Group of Institutes, Vadodara

Marwadi University, Rajkot

Baba Banda Singh Bahadur Engineering College, Punjab

Hope I have answered your question. All the best!