Colleges in Jalandhar

Yes, you can do MBA from IGNOU. There is no doubt but you have to consider two things:
1. In IGNOU, MBA takes 2.5 years.
2. 3 years of working experience is mandatory.
3. Entrance test is mandatory.
4. Don't have an online facility.
It's better to go for MBA from distance learning universities like:
1. Amity University
2. Annamalai University
3. Mewar University

The admission in NITs are based on JEE-Main ranks and 12th marks. The minimum required percentage for admission in NITs at 12th level is 75%. On the basis of diploma you can not get admission in NITs. Hence on the basis of your 12th marks you are not eligible for the admission, if belongs to general category.

Hello!
You can give other entrance exams as well like CAT, SNAP, NMAT, CET, MAT, etc as CMAT is not the only exam whose scores are accepted by the various B-Schools.

The fee structure depends on the rank you get in the exam and surely for all the four years the fee will be of 3 lakhs if your rank is good enough.

Yes, you can certainly do this course now. All you need is a 10th pass certificate for this Diploma but I assume you already have done that. But I would suggest opting for BBA in Hotel Management as it will be more beneficial in long term.

You will have to visit College office for this information. Write an application and mention the reason for it.

Hello Lapteej!
GNDU is better college. So, if your college is affiliated to it then no problem. Or affiliation mostly does not matter, studies matter.

% is actually low to get an admission in a good MBA college. Minimum % required to get a good MBA college is 55%.

If you want to prepare for civil service then don't get yourself into B.Tech try some course like B.A, B.Sc. Take some literature course so that you can focus on civil service.

Yes, you can become but only after clearing the written and physical tests. So, start preparing for it. Good luck.