The basic course structure is same for all the MBA courses. In first year of the course all the essentials of all the specializations is taught like- finance, marketing, human resource, operations etc.

From second year you will have the choices for subjects of your specialized course.

You may have to face some problems, cause you're from pcm background, where many students will be from management or business background. It will not be too effective as much as effective for a busu8ug student. You will need to study daily more than others  for the duration of the MBA to cover up all the difficulties and to get a good placement.