CBSE 12th

B.sc Biotechnology is better than B.sc architecture.
More scope for Biotechnology nowadays.but with 63% marks it will be a little difficult to get admission in a good college though.but can apply for management seats but a little expensive.

Use rank predictor

Apply online for Bms colleges, this is more into general management and is similar to BBA. BMS includes financial markets, marketing and HR. Apply At UPG, Xavier, Jai Hind, KC, Sydenham for best BMS courses.

u can get good NITs with these marks if u don't belong to general.If u r from general then the chances are low.
u should check resonance college branch predictor.
All the best!

No, not possible.

Both are good but you can easily fit in the market after doing BAMS .Homeopathy demands a lot of patience

I don't have much idea about the WBCHSE board but considering it nearly equivalent to CBSE board getting admission in the computer engg. branch in NSIT seems tough. The cutoff for general category delhiites is nearly a rank of around 4-5k. The rank is calculated based on your performance in both boards and mains. Thus giving the score in mains which guarantees you admission in cs is tough. You can try other branches though.

1) complete +2 m.p.CS in one year from national institute of open schooling(nios) and go for B.Tech
2) get details from net/Google

I think I should go for that one in which your heart says

there are lots of possibilities still now,as u can go for civil services