Science

No, mathematics in not necessary for B.Com.

Hello,
List of Diploma courses after B.Sc nursing:
~PG Diploma in Mental Health Nursing~Emergency Nursing PG Diploma
~PG Diploma in Pediatric Critical Care nursing
~PG Diploma in Ontological Nursing and Rehabilitation
~Neo Natal Nursing PG DiplomaPG Diploma in Critical Care Nursing
Certificate Courses in Nursing:
~Cardiac Nursing~Nursing Administration
~ Critical Care Nursing~Surgical Nursing
~ Cancer and Palliative Nursing

They come around in the third week of May. There is a common form for all colleges of Delhi University except for St. Stephen's and Jesus and Mary College for which you need to apply separately.

If you are taking about NDA 2 2018 then yes you can get call letter, chances are high since you are clearing sectional cutoff for maths as well as GATE which would be around 25%.

BBA is best one if want to do MBA and you can do with B.Com or B.Sc. Now you are going to change your stream please checkout the syllabus of MBA. You will come to know what is good for you. As I know this is quite related to B.Com.
Best of luck.

Yes, you can apply for it as you have done your graduation in computer application.

There are Diploma courses in hospitality and hotel management of 1-year, but I will suggest you to go for 2-year Diploma after class 12th in engineering stream.

I would advice you to visit the website link of BVIEER from here:
https://www.shiksha.com/science/course/m-sc-in-environment-science-and-technology-institute-of-environment-education-and-research-bharati-vidyapeeth-deemed-university-dhankawadi-pune-153982

B R Ambedkar Open University Hyderabad does not offer B.Sc Agriculture. You can check the undergraduate programme by visiting the below link:
https://www.braouonline.in/MISC/Information/Programs.htm