BCA

You should pursue B.Ed if you want to make a career in the teaching field.

Following are the colleges which offer this course:
Acharya Narendra Dev College
ATMA Ram Sanatan Dharam College
Aryabhatta College
Bhaskaracharya College of Applied Sciences
College of Vocational Studies
Deen Dayal Upadhyaya College
Hansraj College
Indraprastha College for Women
Kalindi College
Keshav Mahavidyalaya
Ram Lal Anand College
Shaheed Rajguru College of Applied Sciences for Women
Shaheed Sukhdev College
Shivaji College
Shyama Prasad Mukherji College for Women
Shri Guru Gobind Singh College of Commerce

Hi,
Below link contains the list of BCA colleges:
https://www.shiksha.com/search/?q=BCA&bc[]=33&sa=158^0^33^0^0^0^0^0^0^0^0^0^0^bc:33&rf=searchwidget&ct[]=158

Yes, you are eligible for BCA course after completing 12th science stream. To apply for BCA course you should complete 12th standard or equivalent examination in any discipline from a recognised university. You should score minimum 55% percentage of marks in 12th board examination.

Yes, you can get. It is very greater chances that you will be getting a seat in IIIT, or NIT in CSE branch. But also at same I suggest you to decide a plan b means just choose another college also for the admission as a backup plan. Means if you are unable to get a seat in IIT etc. Then you have a second option too. By this your time will not wasted. By the way hope for the best. It is much possible to get a seat in IIIT or NIT.

This marks are good enough for IGNOU. You can try in other colleges as well.

Yes, you can apply as air hostess need minimum 157.5 cm. Go ahead!
Please upvote.

Yes, you can do BCA. Students with commerce without maths can also do it. Please see the criteria as you have dropped one year. Please upvote.

Hi Rohan,
Sure, you can give the CAT entrance examination in the final year of BCA itself. Else, Take some months gap, join any coaching institute like TIME after graduation. For make a way easy. Yes IIM admission criteria is Maximum scores in 10th,12th, graduation percentage is considered and it also depends upon community. All the best for your future.