IIT Delhi - Indian Institute of Technology Answered Questions

Hi durgesh. In order to do MBA with job you can apply for the executive MBA program at DMS IIT Delhi. It is a part time program for working people. You can get the desired details about the process for admissions in this process on the webstie dms.iitd.ac.in

Dear Manik
You have a whole year and above all the realization of not focussing well earlier, if you really wish and determined you can make up for the time lost. Start from 11th and 12th ncert books and practice the concepts thoroughly.
Make a study time table to devote time to each subject.
Identify your learning style and work accordingly.
Be attentive and motivated in your coaching classes to learn.
Dont hesitate in asking questions to ur peer group/ teachers.
If you are really passionate, you will sail through.
All the best and feel free to post your queries.

There is no point giving a false hope. I would suggest start looking for admission in premier private universities like BITS, MU and Lovely Professional University etc.
Taking a drop would not be a logical step as gap year affects your career a lot.
Dont worry on the placement or Education part. If you would be good you would obviously do well. Best of Luck.