I am graduated in food and nutrition but have not got 50% marks. I have 45% marks. Am I eligible for M.Sc clinical nutrition?

The standard eligibility rule is 50% for all the recognised colleges although you can look for private colleges too.

According to the eligibility criteria, you may not be eligible for M.Sc. Eligibility Qualification: Pass with a Bachelor's degree in Home Science, Nutrition, Dietetics, Food Science, Biology, Microbiology, Clinical Biochemistry, Life Sciences, BNYS (Naturopathy), BAMS (Ayurveda) or PG Diploma in Die