Kanpur

Hi Shaksham,
Yes, you can get admission here without Mains exam because here admission is through counseling based on the rank obtained in Uttar Pradesh State Entrance Examination (UPSEE). The minimum eligibility criteria for admissions to the undergraduate programmes state that the candidates will have to complete their 10+2 with a minimum of 50% marks in the qualifying examination, from a recognised board. For full detail you can refer to this link given below :-
https://www.shiksha.com/university/harcourt-butler-technical-university-Kanpur-5040/admission
Thanks.

PSIT, Kanpur is the best for CSE as they provide good placements and the faculty is also good.

National Sugar Institute, Address:
G.T. Road, Near Kalyanpur Railway Station, Kalyanpur, Kanpur, Uttar Pradesh-208017
Regards.

There are over 10 BCA colleges in Kanpur. Please refer to the link provided below for a detailed list of these colleges. You should be able to navigate to a college of your choice using the filters on the web page. Check for details regarding a BCA from St. Xavier Institute of Computer Applications. BCA from St. Xavier Institute of Computer Applications:
https://www.shiksha.com/it-software/course/bachelor-of-computer-application-st-xavier-s-college-Ahmedabad-navrangpura-284239
Top 10 BCA colleges:
https://www.shiksha.com/it-software/colleges/bca-colleges-Kanpur
Regards.

If you are not interested doing class 12th, then go for Diploma in engineering. And after Diploma in engineering, go for Bachelor in engineering.