Course comparison

Maulana Azad National Institute of Technology (MANIT) is best for both the branches.

It is just the nomenclature which changes. Not much difference. You can always compare the two syllabuses.

Both Retail & BFSI have nowadays good scope. BSFI is a larger and good paying industry. Therefore, I will like to recommend BFSI over Retail .

Both the fields are good in the region. First of all you decide your interest. Now a days no field is good or bad its on u how you will complete your passion.

I think CS is better than civil in terms of placement.
Go for it !
Best of Luck :)

B.com hons is always most preferred only if u can get it. It also depends on what are your career plans

both are good in their own respective fields

It depends on your passion and interests.
In India, there is not much scope for Biomedical Engineering. The few colleges which offer Biomedical Engineering, don't have good facilities or advanced equipment.
On the other hand, electrical engineering is an evergreen field of engineering. Jobs are plenty and is going to be in the foreseeable future.
Electronics engineering companies in India are few so most electronics engineers end up being software engineers. I don't recommend Electronics engineering to you unless you are 100% sure that you love semiconductors, diodes and transistors.

Fine arts and interior designing both are very different fields. You will have to see which field interests you more and then decide.
Refer to the link below to get a better understanding:
http://www.webdesignerdepot.com/2009/09/the-difference-between-art-and-design/

CFA is a certification if you want to exclusively get yourself established in the field of finance. Where as MBA offer you various fields of specialization including finance.