Guru Gobind Singh Indraprastha University

You simply have to give the entrance exam.

It would be tough to tell you specific B.Tech Biotechnology seats but total no. of B.Tech seats are approximately 4360 in IP.

This link might be helpful for you. https://www.shiksha.com/mass-communication-media/journalism/course/m-a-in-journalism-and-mass-communication-guru-gobind-singh-indraprastha-university-dwarka-delhi-108845.

Wait for the beginning of counselling rounds and cutoff list. It will tentatively start in first week on June.
Also, search for good colleges which you want and you can do it on shiksha.com too. Just search about your courses and colleges.
You'll get to know the best for you.
Wish you all the best for counselling rounds.

Hi, you have to achieve the rank from 1 to 950 (if you are from outside Delhi) to get admission in good colleges like VIPS and JIMSVK. Rest you can search about colleges and there fees structures here at Shiksha.com (link given below).
links - https://www.shiksha.com/college/jagannath-international-management-school-vasant-kunj-Delhi-vasant-kunj-49186?rf=searchWidget&landing=ilp
https://www.shiksha.com/college/vivekananda-institute-of-professional-studies-pitampura-delhi-28593?rf=searchWidget&landing=ilp.

You have done B.Sc in hotel management, you can take any subject in Bachelor of Education whether be it business studies economics, arts, etc.