B.Tech Computer Science and Engineering

Generally, you get a job in software sector companies like Wipro, Infotech, etc.

JUIT, Solan is better. The curriculum is better and placement too.

If you are looking to choose between CSE and Marine, then I'd suggest Marine but only when you do it from some good institution. Like IIT Kharagpur offers B.Tech Marine degree and they have good placements also. They have designed the course in such a manner that it caters to the needs of Marine Tec

You can get so many government colleges and I am listing some good colleges do check:
1-Institute of Engineering & Technology
2-Bundelkhand Institute of Engineering & Technology
3-Kamla Nehru Institute of Technology
4-Government Engineering College
5-Galgotia's College of engineering & Technology.

It is a good all-India JEE Mains rank. You should definitely wait for the process. And should apply to good colleges through JoSAA. You might not get a core branch but you will definitely get admission in a good NIT. Just keep on filling the forms. Go till the last round.
All the best.

A Diploma holder can join B.Tech course (regular or distance) by D2D process after completing Diploma in Engineering. B.Tech programme allows Diploma students to take entry directly into the second year of engineering course. For taking admission in B.Tech, you must have done at least 3 years Diplom

UK has a number of reputed universities such as Oxford, Cambridge, Imperial College London, Queen's University, University of Manchester, University College London, etc.

The fees per year for CS engineering is given below.
Year 1 - 108,280/-
Year 2 - 108,280/-
Year 3 - 108,280/-
Year 4 - 108,280/-
The institute is spread over a 5 acre lush green area, away from the busy city of Mumbai in the suburbs, though well-connected to the city.
SFIT offers programs in UG BE degree

In every aspect, SRM is way better than Galgotia’s University so you can't even compare them. Galgotias is not even in top 100 colleges of India.