Engineering

Yes, you are eligible for M.Tech in renewable energy engineering and Management course you just have to apply for that course in any of the private University and then only you will be getting admission in each and every college you want.

There is a scope in each and every field either it is B.Tech or it is Polytechnic. It only depends upon the marks you have scored and the amount of internship and certificate that you have received in the academic year.

Yes, you can do M.Sc in mathematics through distance education.

With this rank, yes you can get computer science and engineering in VR Siddhartha College, but you have to apply for the counselling as well.

Yes, you can get admission with this rank.

Each and every department including civil department has 20 seats for lateral entry.
Out of which, 1 seat is reserved for SC, 1-2 for ST and 4-5 for OBC.

You may get admitted to other branches based on your CET rank and category. It's difficult for you to get admission for computer science in COEP as the cut-off generally exceeds 95 percentile.

Hi,
There is not much difference between CSE and ISE. You can check some of the differences below:
1-In general terms, ISE deals with only software while CSE deals with both software and hardware.
2-Placement wise both these branches have similar placements, barring a few companies who allow CSE students and not ISE students.
3-You can go for higher study in CSE.

Hi. Please follow the link to get more information.https://www.shiksha.com/college-predictor

Report on 21, its better to report sooner for the first time in college. Good luck!