Civil Engineering

Check out the links below for JEE Mains rank and college prediction:
https://www.shiksha.com/b-tech/resources/jee-main-rank-predictor
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

Yes, you can join. If your mind is toward civil engineer, and that is depend on your mindset and interest.

Sorry Jaydev, you're not eligible to get admission in CSE at St Andrews college because you've completed your Diploma in civil engineering, so you must choose B.Tech CivIl in B.Tech.
There is no chance of getting CSE.
Students should take the branch in which they have completed Diploma, it's the rule.

If you want to do MS in civil in USA, then its best ever selection done by you. And after MS you can definitely get job in USA easily.

Use JEE Mains College Predictor:-
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

Please visit this site first
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor&ved=2ahUKEwjd0NzModzhAhUZfSsKHfLtA6UQFjAAegQIBBAB&usg=AOvVaw1N9BzFtyUCP4JU-2UQHQ0H

That's the best ever option to do Bachelors in UK rather than India but if you have no money problem. And, I suggest to do in UK, because one of most common problem in India is education system. In UK, I heard that they give best practical knowledge with theory. So, it is a good idea in my point of view. Thanks and best luck for a better future.

Yes, you can purchase civil engineering to lateral entry; but you should satisfy the minimum eligibility criteria of the college to take lateral entry.
I hope this helps you.
Be free to share any problem you have.
All the best for your bright future!

First of all, I would tell you that admission in good college is depend on your result. If your result is good, then go for following universities-
1) DDU
2) BVM
3) Charusat
4) Bits Pilani
5) MSU
6) LD
And, if your result is average then go for any GTU colleges. Thank you.