Degree

The college you mentioned provides the said course.
https://www.shiksha.com/humanities-social-sciences/political-science/course/master-of-labour-welfare-mlw-veer-narmad-south-gujarat-university-surat-171796

I think you can. Your PG degree must have mentioned somewhere that you are a Bachelor + Masters. So, you should be able to apply.

Yes. But, sometimes, colleges require that you submit a self-declaration stating that you will clear. Your backlog before a set time or your admission will be cancelled.

MBA in India is 2 years and is considered a Masters Degree. In foreign nations however, it can range from 1 year to 3 years. You will have to check each college individually. Also, not all courses are considered a degree. You will again have to confirm that for each college.

I prefer you to go in NID and apply for it and view the previous year admission list of students. You will be considered like a B.Tech student only, so go for it.

Dear Sachin,
Choosing between M.A. and M.Sc. in economics, you are to see the course contents whether both or which one is with thesis. Go for post graduation with thesis so that scope for doing Ph.D. is kept open. However, Masters in Economics has a bright career prospect as well as salary if projected in befitting way. For better life I mean happiness - which is required to be dragged out from your own resource that is from your mind. That's a separate chapter - and I think I'm not the right one to discuss on it.
Best wishes.

Hello Pavan,
Well, it is good that you are going to complete your Bachelors, and now, you can go for MBA in hospital management in order to gain the knowledge in the sector you are willing to go for.
All the best.

Yes, the photographic course will be applicable with having diploma in engineering degree.

If you want to take a graduation degree you have to give minimum three years of time!
Otherwise you can take a Diploma course!
Good Luck!