This year they are not having Nutrition and Dietetics in their course guide.

This is the list of courses they are offering: https://www.osmania.ac.in/sciencecollege/courses.html

The admission criteria are as followed:

For admission into any of the post-graduate courses (M. Sc.), a candidate must have passed the B. Sc. degree examination of the O.U., or its equivalent, with requisite percentage.

Further, a candidate must have qualified at the Common Entrance Test (OUCET) conducted by the University in the relevant subject(s) in the academic year for which admission is sought.

Hope this helps!! All the Best!