Class 12-science

Yes you can pursue BA Honors, but as the competition is high you should not change your stream just have back plan kn which you can do better. It's better to pursue course in your stream itself. It's upto you.

If a commerce student has studied mathematics as a subject at the Senior Secondary Level, then: A) one may join a Bachelor of Science (B.Sc ) in Computer Science (C. S. ) ( 3 years) from universities like the University of Delhi, this could be followed by either a Master of Science (M.Sc)

Why I want to join CBI interns inthe field of investigation, corruption & analysis of legal judgement.

The decision would be based on your interest areas and long term career plans. Since you are a Science student you have the option of exploring career in Pure sciences, applied sciences, Arts, commerce, media, management, performing arts, liberal arts, medicine, etc. , Many of these course will require you to appear for an entrance test, so you need to explore it accordingly. A person usually does well on the career front if he/she joins a course which it aligned to ones interest areas & passion.

Each and every branch in engineering is good, we can't compare them. There are just a few differences like mechanical, electrical and civil are evergreen branches but CS IT and EC have high placement records. Other than this, you may also take chemical, metallurgy, mechatronics, etc.

Dear Odisha
You can go with the B.Tech in CSE, IT, ECE, industrial production are the top streams to pursue.

After completing the MCVC, you need to choose a future stream based on your interests and competencies. According to the MCVC scheme, the different groups include Engineering technology, commerce, agriculture, health and para medical services and home Science. So your brother can opt the courses according to his area of interest.