M.Tech

Here is the list of top private colleges for M.Tech in India. https://www.shiksha.com/engineering/colleges/m-tech-food-technology-colleges-india.

Yes, definitely ! You need to qualify either GATE or Institute specific exams. A few institutes offer integrated M.Tech + Ph.D. option you can explore that option. JNU, BHU, IARI, IITs are a good option.

Yes, you can go for a Ph.D. in CS after completing your MBA degree. To be in the safe side, you should have a very good research paper that will ease your application for PhD degree.

Hi Parth,
Yes, you are eligible to apply.

Hello Rohit,
I am very happy to hear from you that you are interested in doing your M.Tech even though it is in distance education mode. PG will definitely enhance your career progression and will take you in a different sphere altogether. To help you I am attaching a link that will give you all the required information about different colleges offering M.Tech via distance education.
https://www.shiksha.com/engineering/colleges/m-tech-transportation-engineering-colleges-maharashtra

Hello Shobha,
I am indeed very happy to hear from you that you are interested in doing your Post Graduate studies in Environment Engineering. This subject is going to be of great importance in days to come and I must appreciate your desire for this course. To help you, I am attaching a link that will give you all the required information about different colleges offering this branch. https://www.shiksha.com/engineering/colleges/m-tech-environmental-engineering-colleges-india-3
Best wishes to you.

Yes, definitely, there will be sub-streams like-
IC Engines
Boilers
Heat Engines
where we can go for our interested field.

Yes, B.Tech final year student can apply for the PGECET. IF you qualify based on the college fee will vary some may charge more than reimbursement and some colleges go with reimbursement only.

Your thought is better, as after the B.Tech in agriculture engineering. You can go for lot of jobs in various agriculture departments like AO. etc., And, Mechanical Engineering is also a very good Branch in engineering.

Last year, the cut off was 27 for the Respective M.Tech seat, but coming to this year it may vary.