Selection of course is totally dependent on your interest area. You can opt for M.Sc in any of these fields as all the fields have different values and scope.
There are many colleges under Delhi University, Punjab University and IIT which offer M.Sc course. The admission procedure, eligibility criteria, minimum percentage requirement vary from college to college and institute to institute. So you have to contact the colleges individually in which you want to take admission.
You can compare colleges as per your preferences by using our Compare Colleges Tool.