MBA/PGDM

Hello,
You can check and apply in IP University's courses.
It provides weekend classes.

Yes, you can get the scholarship from a reputed B School. But there is always certain criteria which you need to meet.
Some B-schools have scholarships based on CAT, MAT or other entrance exam scores. Some consider the 10th, 12th or graduation percentage.
Like IIM -A has Need-based scholarships where the scholarship amount is decided on the basis of annual gross family income and some more factors.

The fields which can be best for you to do master of business administration course being a civil engineer are as follows:
Construction Management
Infrastructure Management
Project Management
The best colleges in the country offering these courses are:-
National Institute of Construction Management and Research
Indian Institute of Sciences, Bangalore
Indian Institute of Technology Delhi
Indian Institute of Technology, Madras
Other than these colleges there are many good colleges in the foreign countries which offer a degree in construction management, some of them are:-
Harvard University
Stanford University
Wharton School of Business

Just check with IGNOU if it offers this course. It is a well-established brand name in the field of distance education. It is internationally renowned.

Hello Mirza,
The basic criteria for pursuing MBA is 50% in graduation (for general category) and 45% (for reserved category).
Some of the colleges provide admission even at lesser marks, but such institutes won't add well to your career.

Hi Sneha,
It is your discretion as both the courses are best. But still I would consider that you should to opt for MBA from USA (especially from Stanford, Harvard or Wharton if possible). Since you are also concerning for ROI then this would be the best course because MS in marketing (is also up to the mark) but not as like MBA.