IGNOU - Indira Gandhi National Open University Delhi Answered Questions

Yes, IGNOU provide Diploma in event management. For more details, please go through the link:
https://www.shiksha.com/mass-communication-media/event-management/course/diploma-in-event-management-ignou-indira-gandhi-national-open-university-sake-Delhi-381869

The courses in Nutrition and Dietetics are offered at diploma, undergraduate and post-graduate level. There are institutes and universities in India offering courses viz. PG Diploma in Nutrition and Dietetics, B.Sc (Food Science and Nutrition) and M.Sc (Nutrition), etc. Admission to these courses is made on the basis of merit. But a few institutes/universities also conduct entrance examinations for admission.
To do the M.Sc course in Nutrition, one needs to have a basic graduate degree preferably in science. Preferable fields of graduation are: Microbiology, Chemistry, Home Science, Medicine, Hotel management or catering technology. One may also pursue a year-long PG Diploma in Nutrition and Dietetics. Fresh graduates are trained by the F&B departments of hospitals. The PG Diploma course requires at minimum a degree in Science.
To do the Bachelor program in Nutrition and Dietetics, one should have completed intermediate in Science with Physics, Chemistry, and Biology. The B.Sc (Food Science and Nutrition) is a three-year program.
Hope this helps! wish you luck for your future endeavors