Mechanical Engineering

No its not easy unless you have passion.

Its purely up to you
if you have what it needs to drop one year then go for it

Of course its worth
for placemenet record
http://www.srmuniv.ac.in/engineering/department-of-mechanical-engineering/placement/placement-statistics

Sure. Begin by preparing word lists. Enhance your comprehension and speed reading. Second year is the right time.

You need to score good percentage in B.Tech as per the requirement of university, which varies university to university. You should have IELTS score and some of the universities are asking for the GRE and TOEFL score. You can visit the website of the university and download the e-brochure to get information about all the terms and conditions.

It is one of the chief engineering streams of the world and its importance will only decrease when development will get stopped which is next to impossible. So go ahead with it as it is having great prospects.

Everything in this world is hard, so it depends on your passion about the subject.

There is no need of degree. With 6 years of experience he is eligible for executive MBA. Ask your friend to complete his B.Tech. There is no need of MBA, to become a manager in the technical field.

SRCEM, Haryana is not a good college for mechanical engineering. You should check for other options.