BCA

If you really like computer Science then go for BCA and try to trained in different in programming languages and, networking security, cyber security, etc. Both are slightly differ like in programming, designing etc. Firstly clear your difference in between IT or CS from this link
https://www.computersciencedegreehub.com/faq/difference-information-technology-computer-science/
Just choose on yourself. Also the other two is also good prefer B.Tech more since it have more scope based on now Condition however you can also go for BCA it has also good scope in future too.

Please refer to the link provided below for eligibility and admission process followed to secure entry for BCA in SMS, Varanasi. Please check for your eligibility from the criteria mentioned at this link. Other important details like fee, placements, course structure, etc., are mentioned in this link.
Regards.
https://www.shiksha.com/it-software/course/bachelor-of-computer-applications-school-of-management-sciences-varanasi-173559

Yes, CMAT score is required for LD College, Ahmedabad.

No, there is no entrance exam for BCA at AIIT, Malad. AIIT is affiliated to Yashwantrao Chavan Maharashtra Open University and YCMOU grants admission to candidates on the basis of merit earned in previous qualifying exam in all the courses except for MBA. Candidates applying for MBA course will have to appear in a written test conducted by the university.
The candidates must select their study centre with utmost care so that they are able to reach there whenever required.

The online application form of BCA at the Maharaja Sayajirao University of Baroda will be available from the 1st week of May, for more details check the link below:
http://www.msubaroda.ac.in/storage/admission/BCA Prospectus 17-20.pdf

Many of the forms come out before the result for class 12th gets announced, so by the time your result is out, you can definitely apply for your desired course.

Yes, you can. Diploma is based on your 12th and 10th mark. So, if you have successfully completed both 10th and 12th then you can apply for Diploma.

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.

Hi,
Please see below the list of colleges:Atharva Institute of Information Technology (AIIT, Malad)
Institute of Business Studies and Research, Navi Mumbai
Amity University, Mumbai
University of Mumbai, Fort Campus.

There are over 18 BCA colleges in Bhubaneswar and Orissa. Please refer to the link provide below for a detailed list of these colleges, along with their fee structures. You should be able to navigate to the top colleges in the list using the filters on the web page. Regards. https://www.shiksha.com/it-software/colleges/bca-colleges-orissa?uaf[]=location&ts=41688263&rf=filters&ct[]=912&st[]=119&bc[]=33&ed[]=et_20.