B.Sc

Hi,
Different universities will be having different syllabus. It depends on the university you join. You can get the syllabus copy from your prefered university.

Hi,
Ther is no age limit for these graduation or PG courses.

Yes, it has a very good scope in future.

You have plenty of options:
1. You can continue your study and complete M.Sc.
2. You can work in any company like Hindustan Zinc ,Jidal Mines etc., where they frequently need electric department( they take written exam as well as interview before hiring.)
3. If you have money problem, but you want to continue study with job, you can fill forum from Open University. Being a teacher, I will suggest you to go for higher studies and work hard.
Best of luck for future.

IIM's I would say aren't the end of the world and you can very well reach similar or greater heights in your career despite the IIM tag. You can look at other Indian MBA B - Schools or Foreign B-Schools, that don't give as much weightage to 10th and 12th percentage like ISB.
Also, I would say it is important that you introspect a bit about your career and look for ways to progress where your past profile would not be a hurdle.