Engineering in India

If you are planning to go for higher studies after B.Tech, then opt for electronics engineering. Electronics engineering has very narrow scope in India. You should opt for B.Tech in IT or CSE instead of electronic engineering.
B.Sc in IT is also a good course, but you will get benefited by pursuing B.Tech.

Here are the top 5 colleges:
IIT Madras.
NIT Trichy.
Hindustan (Chennai).
Madras Institute of Technology.
PSG Colleges Of Technology (Coimbatore).

Hello Gurjot,
India is far better than New Zealand for computer engineering. In India, there are lots of good universities which will give you good placement after successful completion of your engineering degree. You can go for Masters in countries like the USA to avail better career prospects.

Yes, you can take admission in BHU, Varanasi for this course.

I don't think options are available in US , you will find only MS or integrated Ph,D , graduate certificate courses are available in few universities but you need to hold an advanced degree for the same. If you are not interested in Masters there is no reason to prepare for GRE. Instead look for PG Diploma courses in Australia, Canada or New Zealand. You need to decide what you want to study and prepare accordingly. Check University of Michigan - Dearborn, University of St. Thomas, Minnesota and Boston University for Graduate Certificate in Engineering disciplines. Best of Luck.

Indian Maritime University (IMU) Chennai , Vels Academy of Maritime Studies Chennai and International Maritime Academy (IMA), Chennai are the best

Reputed colleges under VTU would be good, like RVCE

In education sector Ukraine is not so good as other European countries , Ukraine always suffer from some issues with Russia and their institutes are not so good as well . In india you can pursue your aeronautical engineering in reputed universities like IIT, PEC etc.
If somehow you want to pursue your graduation abroad then choose Australia, Canada, Germany , USA. These countries consists of some pioneer institutes like University of California, University of Toronto, etc.

There is not much scope of geoscience in india but if u go abroad theres a lot of research work going on there.