Degree

Only if you are a final year student. Yes, Any engineering. Graduate ( Passout / Final year Appearing ) is eligible to appear for IES examination. You, however, need to produce the required documents of the qualifying exam as and when asked by the UPSC commission before the final selection. Yes, you can apply for IES engineering services examination). .

It would depend on the type of Masters and the university policy. In most popular Colleges that would not be possible because they prefer students with course background. But you could get into many other colleges that may not be very popular

No, as per the official website they are currently not offering that course. There are some recognition issues still pending
http://ksoumysore.Karnataka.gov.in/Documents/Final UGC recognition list-KSOU. Pdf.

yes you are eligible and you can take admission as per your choice

You would have to clear your degree arrears before proceeding for MA.

The criteria for taking admission in B.Ed is 50% marks in graduation. Yes, you are eligible for B.Ed after B.Sc.

Yes, you are eligible for taking admission in M.Sc in horticulture. Kindly visit this link:
https://www.shiksha.com/science/course/m-sc-in-horticulture-floriculture-and-landscape-gardening-annamalai-university-tamil-nadu-other-273639

Hello
From a same University you can take admission in one course only .you have to complete your bed if you also want to do b.ed
ALL THR BEST

Hi,
You can refer the link for more information. https://www.shiksha.com/architecture-planning/interior-design/colleges/colleges-india

You can apply for the visa for the other countries but solely on class 12th basis. It is really tough to get a decent job, because some higher degree must be there to secure a job. I suggest doing any Bachelor level course related to home Science then apply for jobs in foreign. Good luck.