CBSE 12th

Yes, you are eligible to apply. The minimum percentage required in 50%.

Some universities consider Diploma as equal to 12th but some demand PUC only to give admission to degree courses.

It depends on your interest and aim, for a degree course, you should go for PUC but for engineering, it's better to opt for Diploma as it gives you the basic knowledge of engineering.

No, you cannot do Diploma and PUC simultaneously, no university or board allows it.

It depends on your interest and aim, for a degree course, you should go for PUC but for engineering, it's better to opt for Diploma as it gives you the basic knowledge of engineering.

You should prepare for colleges like DTU and NSIT.
For more information, you can visit this link:
https://www.shiksha.com/b-tech/jac-delhi-admissions-exam

You need 50% marks in PCB (practicals+theory) in your board exams to be eligible for NEET. During admissions, if two students profile clashes (everything is same i.e. age, marks in the individual subject in NEET, category, etc., then your board marks are considered for admissions.

Hello Jayashri,
There is nothing like SAT in India. Admissions are based on marks obtained in 12th. Of course, for admission into professional courses, there are state level or Pan India entrance tests. So, depending on your interest and desire, you can take admission directly or via an entrance test.
Best wishes.

Yes, you may apply for it. A majority of students study via NIOS due to such reasons. But, do work really hard.
I hope you will come up with flying colours.
All the best.

Yes, you are eligible for JMI, but you have to fill the application form of JMI.