CBSE 10th

It doesn't matter. Only your percentage or CGPA will matter in the end, because these marks will be taken into account and not your Board.

Dear B.Com graduate in both case distances or regular. You can complete BCA regular from any university. As Diploma any stream can take admission in BCA regular. Graduation in regular have more values than distance. You an complete MCA and Ph.D.
12th is not considered like this in this stream.
All the best.

Hi Kavya!
As you have completed your class 10th through Tamil Nadu State Board. Don't worry. You are definitely eligible to apply for the Diploma in agriculture. Just prepare for Diploma exam. Best of luck.

Hello,
Maths is not compulsory. You just need basic knowledge of 11th-12th mathematics and that is enough for what is required. Good luck.

After you graduate, for any job you need to get professional specific skills or knowledge. These 10th and 12th marks will just hold you few extra minutes in interview answering why you got that and why they should hire you in spite of that. The last question matters the most and your professional skills and abilities later determine your worth for job, not 10 or 12.

Domicile certificate maybe required in most institution. Educational purpose certificates are easier to get and requires less years and documentation. An aadhaar card always helps and voter card, land/property tax receipt exceeds the requirement.

Diploma in Sound Engineering: Eligibility
A candidate must have passed class 12th or High School Senior Secondary exam by the Central Board of Secondary Education (CBSE) or any equivalent exam conducted by any State Board or Equivalent to be eligible for this Diploma in Sound Engineering course. The students must have a Science stream in the qualifying exam i.e. Physics, Chemistry, and Maths as subjects. However, the marks secured by the student vary from on institute to other.

Yes, sure you can do that without any doubt.