Hi,

Duet entrance exam is conducted by nta on behalf of delhi university.

You can download the 2018 M.Sc food and nutrition entrance exam paper with answer key from the following pdf link.

http://www.du.ac.in/QPPDF-new/DU%20MSc%20Food%20and%20Nutrition.pdf

Also nta provide the mock test for entrance exam you can also try that to have an awareness about nature of question paper.

Hope it helps.