Mechanical Engineering

Reva is a better option, check out the reviews below :
https://www.shiksha.com/university/reva-university-bangalore-40416/reviews?course=201553&sort_by=year+of+gradution&type=question

Hi,
B.Sc colleges available for you are:
Loyola College, Chennai
Christ University, Bangalore
St. Xavier's college, Mumbai
I would prefer you to take the lateral admission in engineering as you have good grip over mechanics and can join by omitting one year.

With your undergraduate score, you will need to have an amazing GRE score, good recommendations and a terrific SoP. I would encourage you to work hard to score 317+ in GRE. IELTS is just a measure of your English proficiency and nothing much. A score of 6.5-7 or above is good enough. You need to work had on other aspects of your application.

Of-course, you can. But, the answer is not that simple. There are many other factors like which universities are you considering? What is your profile? Do you have any work experience? How well written are your recommendations and SoP?

Yes, go for GRE. Prepare very well and try to score 310+ to get into a top university. You will also need to take TOEFL or IELTS to demonstrate your English proficiency.

Hi,
You better learn some modelling software related to mechanical like CAD, CADIA, PROEY, etc. which will help you to get a good job or else try for Indian Railways.