Distance/Correspondence

No, it is not necessary, you have to come only for examination at the same place from you are doing that course.

Admission Process of M.Sc. Microbiology Distance Education: M.Sc. Microbiology Distance Education is the 2-year master degree which can be possible in the distance and regular mode, the distance mode is more beneficial for the higher education after getting a bachelor degree in regular mode and it will be started very soon, keep eyes on the official websites of the college
https://www.shiksha.com/science/colleges/distance-correspondence-m-sc-colleges-india
Here is the list of the top colleges for M.Sc. In Microbiology along with the admission procedure.

MEd is typically of two years duration divided into four semesters. However, some universities/ colleges also offer one-year duration MEd programme. The course is offered in various subjects and specialisations. Candidates can pursue MEd in distance education and regular mode.
https://www.shiksha.com/m-ed-master-of-education-chp
here you go to know all the colleges that offered M.Ed.

Andhra University Distance Education B.Ed 2020 Date
Application forms releases 1st week of Jul 2020
Last date for receipt of filled in application form Last week of Jul 2020
Last dates for receipt of filled with of Rs. 300/- 1st week of Aug 2020
B.Ed Entrance Exam date Last week of Aug 2020.

Qualifying Degree :
BE / B.Tech/ B. Pharma
Bachelors degree holders in Engineering/ Technology (4 years after 10+2 or 3 years after B.Sc/ Diploma in Engineering/Technology) and those who are in the final year of such programs. Currently in the final year or already completed
Qualifying Degree:
B.Arch
Bachelors degree holders of Architecture (Five years course)
Currently in the final year or already completed
Qualifying Degree:
B.Sc. (Research)/ B. S. Bachelors degree in Science (Post-Diploma/4 years after 10+2)
Currently in the 4th year or already completed.

https://www.shiksha.com/bba-bachelor-of-business-administration-chp
here is the complete details about the BBA Management, you can visit the link to get aa the updates.
February 18, 2020: Last date of admission to all courses extended to February 28, 2020.
January 31, 2020: OPENMAT applications are available. The last date to apply is February 29, 2020.
January 3, 2020: New online certificate courses introduced in Arabic & Russian language

No, exams are not open yet you may apply to it by entrance forms after July.

https://www.shiksha.com/medicine-health-sciences/dietics-nutrition/course/diploma-in-sanitary-inspector-imperial-institute-of-management-andheri-west-mumbai-288689
Here is the complete details of the course of nutrition and dietitian for this college

If you are university is approved by UGC then definitely you are eligible to apply for both the Government and Private sector job. But, most of the private sector companies which do not prefer the candidate who has completed their graduation through distance mode. After completing B.Sc (PCM) you are eligible to apply for National Level and State Level Government exams.
1) Union Public Service Commission (www.upsc.gov.in)
2) Civil Service Exam (www.upsc.gov.in)
3) Staff Selection Commission (ssc. nic. in/)
3) Other State Level Government exams.

JMI B.Ed programme Distance Mode - Admission is through Entrance Test. Applicants must be In-Service Teachers with (I) A Bachelor's Degree (10+2+3) from a recognised university, (ii) Two years full time Teaching Experience on Temporary/Permanent basis in a Primary; Secondary/Sr. Admission is through entrance test.