I am a B.Tech graduate, currently working in a good MNC. Is it possible for me to do MA in archaeology from UNOM?

Yes, it is possible. In UNOM, the eligibility criteria is: The candidate must be a graduate from a recognised college / university. You can get more information through this link: https://www.shiksha.com/humanities-social-sciences/history/course/m-a-in-ancient-history-and-archaeology-university-of