India

Yes Sah, you can do B. Tech online through various reputed colleges like Pune Institute, Sunshine Institute of Advance Education, Integrated Institute of Merchant Navy, etcetera.

Hello,
The following are the top colleges for BCA in Delhi:
1) IMS Noida
2) Lingaya's University
3) Sharda University
4) Manav Rachna International University
5) IIMT College of Management
6) Fairfield Institute of Management and Technology
7) Indira Gandhi National Open University
8) GGSIPU, Delhi
9) Amity University, Noida
10) Noida Institute of Management Studies

If you are willing to get more knowledge about civil engineering you must attempt GATE and IES exams. Also, if want to do Masters you must attempt GRE, TOEFL, IELTS, etc. If you want to work in the public sectors you must go for UPSC, Railways, PWD's, etc.

Checkout this answer on shiksha:
https://ask.shiksha.com/what-is-the-scope-m-sc-microbiology-in-india-qna-3929147?referenceEntityId=3977466

If you are planning for abroad then you should also apply for GMAT or GRE.

The list of colleges is as follows:
IIT Kanpur
IIT Banaras
Motilal Nehru National Institute of Technology, Allahabad
Harcourt Butler Technical University, Kanpur
Indian Institute of Information Technology, Allahabad
Jaypee Institute of Information Technology, Noida
Shiv Nadar University, Dadri
Zakir Hussain College of Engineering and Technology, Aligarh Muslim University, Aligarh
Ajay Kumar Garg Engineering College, Ghaziabad
Amity School of Engineering, Noida