Colleges in Punjab

Thapar University is better in terms of placements, infrastructure, college life, internships, industry visits, company collaboration, platforms, unions, faculty, food, hostel, etc.

It is approximately 7-8 lakhs for 4 years.

It isn't. You must have got to know by now that the total number of seats are 80. The distribution goes like 60 for Army wards, 16 for Punjab Civil Category and 4 for All India Civil category. The written exam is of 200 marks and without negative marking.
You will be giving the exam to secure one of

If you're from general category then no you don't stand a chance but don't get disheartened give entrance exams for various top private college and try to give your best shot.
All the best.

Hello S Boddu,
I feel with your percentile, you should be able to get your desired branch in Thapar. However, to help you I am attaching a link that will give you all the required information about different aspects of the admission process of this great Institute.
http://www.thapar.edu/admissions
You

No required for JEE Mains Marks. You just have to clear your 12th board and then easily you can get admission.

Hi Anu,
Sorry to say but you can't get computer science engineering at GNU. Although you can get branches like electrical, mechanical or civil.
Best of luck.

Dear Aman, Please refer the below link you will be clear about the admission procedure that happens online.
If you have any queries to understand please let me know. http://online.gndu.ac.in/online-admission-form-link.aspx

You can check that, you may get an admission in Thapar University or not by following link:-
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor