B.Com

Timings are given below:
8:30am to 4:30pm
Lunch break
12:30pm to 1:30pm

It totally varies from university to university. For example, in Delhi university it cost around 15k for one year. So for total duration of 3 years, it will cost roughly 50k. For the private universities it will cost 30-50k for one year. And in total it will cost around 1-2.5 Lakhs.

Yes, any student who has completed their graduation or may be in last year of graduation can apply for MCA. However, Maths should be the main subject in 10+2 or any year of graduation. Students of Arts, commerce as well as of Science stream can apply for MCA.

Yes, you can do B.Com after 12th Science (maths). because Science students can take any field in graduation if the student is from Maths and Science can do B.Com, Maths students can easily do B.Com because maths help them for this.

Yes, you can do after B.Com, as you already have Bachelors degree you can either opt for Diploma in Interior Designing ( 1 Year programme) or M.Sc. In Interior Design considering the fact that you already have Bachelors degree.

All the centrally recognised as well as State Universities provide for the continuation of Studies for students if they have dropped for any reason. It depends from which college you've persued the Course, but most probably you can complete the final year and get your degree.

You have the following choice of colleges-
DSBM Bhubaneswar - DAV School of Business Management, Kalinga College of Commerce, Maharishi College of Natural Law, Bhubaneswar.

You can approach the University for your 10th Certificate if other is not able to give you back then you should file an application with the council from which you appeared in class 10th Exam may it be CBSE or ICSE. The process will take a bit time, but they'll surely reissue your 10th Certificate.

There are various colleges that offer bachelors of commerce with Company Secretary in Bangalore namely Jain deemed to be University, Sivananda Sarma Memorial RV degree College and St Paul's College.