M.Tech

Yes, you may get. You have a fair chances of getting a seat in IIT just wait for counseling procedure that is CCMT but I have doubt that whether this IIT offer this course in which you want to take the admission since many other IIT too offered this course but this IIT does't because last year also

https://cbsenet.nic.in/CMS/Public/View.aspx?page=80
Yes, but be sure that your percentage is at least of 55% in your Master’s degree. Please check on above link you will get the details. It is official site also.

You will not get any decent college. I would suggest you to drop a year if you can & again prepare for GATE.
All the best.

Well, it depends on the branch you have your majors in. If you are from a chemical background, surely you will. If not, some skills are required and some basic knowledge as well. After that, you can start interviewing with such chemical industries. Some internships may help you for this.

Hello,
Don't worry, if you are in job right now, then wait for a year, and then apply for GATE exam. On the basis of GATE marks, you can get admission and generally all colleges give admission on the basis of GATE marks, so it seems quite tough to get admission without valid GATE score. So, wait for

To Take admission in the university, you have to give the University entrance exam name SVET. For more details, visit svvv.edu.in

There are many colleges who take admission to M.Tech programme based on your B.Tech percentage or CGPA. But many college also take tier entrance exam for admission. I suggest you to appear for GATE exam in next year and try to qualify it with very good marks so that you can get the seat in IIT etc.