CBSE 12th

Jamia Milia Islamia in Delhi is one of the premier Institutes in Delhi that offers the best Biology courses after class 12th:
1. B.Sc. Biosciences
2. B.Sc. Biotechnology
3. Bachelor of physiotherapy
4. BDS.

The Delhi University was established in the year 1922. Some of the colleges under this University are Acharya Narendra Dev College, Bharati College, and Hindu College. The Delhi University has released a notification stating that it will give 85% weightage to the CUET Scores and 15% weightage to the interviews for the UG Admissions. The candidates filling the application form for the CUET Exam will get the opportunity to appear in any six domain subjects if and only if these subjects have been covered in Class 12. The candidate will get Admission based on the CUET Exam Score instead of the best of the four subjects of Class 12.

It depend on the university norms.You can apply under foreign quota in universities like DU/ jamia / AU/ Hyderabad university etc.

Top Five Courses to opt For After Class 12th Commerce
Bachelor of Commerce (B.Com)
Chartered Accountant (CA)
Bachelor of Business Administration (BBA)
Company Secretary (CS)
B.Sc. In Actuarial Science.

No, it is not at all compulsory for any field even you can do self study and that will work.

Yes, you can do after taking Science you can do any course whichever you wishes to.

The students who have completed their PUC or 10+2 with 50% aggregate in any stream from recognised board are eligible to apply for BBA course in Kristu Jayanti College. Programs offered BBA. The placement cell regularly conducts skill development programmes for the students. The college ensures that every student gets placed in top organizations and has an excellent career growth.

For getting admission in MBA the candidate should be graduate without graduation you cannot go for MBA.

There are little chances but you can get into the college after 3rd or 4th counseling round.

As per CBSE Revised Rules of correction/change in name/ DoB are as under :
Application for correction in name of Candidate/Fathers/Mothers/ Guardians name will be considered only within one year of the date of declaration of result provided the application of the candidate is forwarded by the Head of Institution with the following attested documents:
So in your case there is a gap of more than 7 years after declaration of result. So correction in CBSE marksheet is very difficult. Please ask to concerned school or CBSE regarding this.