Electronics and Communication Engineering

Petroleum engineering is an emerging new course in this engineering field. I have many friends who earns well than the ece ones even after ece being the older and more preferred one in comparison. UPES dehradun would be the best if you go for petroleum engineering. All the best.

Yes, you can.
All the best.

Hello Chandan,
Please refer to this link to get more insights of the colleges and branches.
https://www.shiksha.com/resources/college-comparison.
However, Dayanand Sagar is better than other two.

Yes,
There are a few entrance exams in railway which needs to be cleared that will get you to work in railways.

Dear Akhil, Reva University is better as your study destination. As the courses ECE & CSE are having huge scope, you can choose any one of the course based on your interest for your career development.
In Reva University, understudies of Electrical and Electronics Engineering have the adaptability to expand their horizons in electronics and communications as the curriculum is industry oriented.
And in Computer Science Engineering too, the curriculum is designed mutually by industry and academia experts which serve the students to acquire the contemporary knowledge and advanced skills.

You must have to visit counselling center for documents verification in 1st round where you can choose upgrade option for CSE in Heritage if you put CSE from Heritage upper to the ECE from IEM.