Dietetics

B.Sc in nutrition and dietetics is a 3- year long full- time undergraduate course divided over 6 semesters.
Course Level: Undergraduate
Eligibility: Passing 10+2
Average fee: INR 2 to 5 Lacs
Admission Process: Counselling after the entrance examination.

B.Sc Nutrition and Dietetics program is not available at Madurai Kamaraj University (DDE), Hence you can not do this. However P.G. Diploma in Nutrition & Dietetics (Only in Tamil Nadu) of one year course is available here. The eligibility criteria is as under.
Eligibility : A Degree in Science with Biology as one of the subject in +2 (XII Std.)

Eligibility criteria for admission: Minimum 50% required are in graduation.
Admission is based on the marks obtained in graduation in the relevant stream.
https://www.shiksha.com/science/course/m-sc-in-clinical-nutrition-and-dietetics-pims-padmashree-institute-of-management-and-sciences-kengeri-bangalore-307251

Master of science [M.Sc] (nutrition and dietetics) colleges in India:
JSS Academy of Higher Education & Research - [JSS University]
KLE UniversityUniversity of Mumbai
Calicut University
Symbiosis International University- [SIU]
Osmania University College for Women - [UCW]
NIMS University

Yes. Admissions are open for this course.

Yes, you can do M.Sc. Nutrition and dietetics from distance learning.
Find good college for distance learning in your area is the main task because many colleges are scam in this. So, if you find a good college than research about them.
All the best for your career.

Hello Anusha,
There is no MSc clinical nutrition and dietetics course only Clinical research is available. Eligibility criteria for MSc clinical research in PIMS is A recognised bachelor degree in any health science subject with minimum 50% of marks with chemistry/Biochemistry/organic chemistry as one of the main subject during graduation.
All the best for your future