Engineering

Hello Ajay,
Of course you can do your PG in robotics. You only need to clear relevant paper of GATE.

No, SET is compulsory for your consideration for any SCMS.

Hello Kunal,
Frankly speaking your query has no answer. It's very subjective. However to help you out, I am attaching a link that will give you all the required information.
https://www.shiksha.com/b-tech/ranking/top-mechanical-engineering-colleges-in-india/48-2-0-0-0

Last year my rank was something 650 (don't remember exactly) in VITMEE MCA. I was allowed to attend the 1st counselling and had good chances of getting VIT Vellore (as they said), if not Vellore campus I would get Chennai. I don't know how this year’s VITMEE MCA was but I think you'll get VIT Vellor

Yes, not a single but many batches have graduated from Presidency University. It is a very prestigious University in India offering many courses.

Age is not the criteria to study admission. If you have relevant experience you will get admission. You can even study abroad which will be one year programme in UK and you can save one year of your life. Also, you can earn back by doing your part time jobs.

This totally depends on the score of your examination in Oxford University for engineering science. It will be my suggestion to go for engineering in any IITs, NITs IIITs or any other Indian government college and go for Masters by cracking GRE and TOEFL tests.