M.Sc

Yes you have to write GRE exam for doing Masters in Reputed foreign universities, it is s waived by few universities for spring 2022, fall 2022, and spring 2023. But there are top-ranked universities like the University of Florida and the University of Boston that offer some MS courses without GRE.21.

Yes, you can join any of these programs after B.Tech.

The eligibility criteria for an M.Sc. in Mathematics at Vikram University are quite easy. Students for this course are required to complete their graduation degree programme in a relevant stream. There is no entrance structure for any of the master's programmes at Vikram University.

55% of the marks should be obtained for MSC chemistry in I.P. college

59%of msc entrance exam are needed

Minimum 50 percentage of aggregate marks are required in 12th standard

IIT JAM cut off 2023 for IISC (Indian Institute of Science) will be released for different programs through online mode. The previous year's cut off will help candidates have an idea about the cut off over the years for a subject of their choice. Candidates who clear the IIT JAM 2023 cut off will be eligible for admission to the institutes of their choice through the IIT JAM 2023 counselling procedure.

No, actually you can't, because the Eligibility Criteria for pursuing M.Sc. Agriculture is different. You should have done your UG in either of these:
Bachelor's in Agriculture
Bachelor's in Forestry
Bachelor's in Horticulture
In a recognised University and secured 60% aggregate marks. So, B.Sc. In CSC and IT will not be applicable for doing M.Sc. In Agriculture!

Some of the short-term courses you can do are:
Certificate course in Pathology.
Certification course in Agriculture.
Certification in Environmental Science:
Certification Courses in Biochemistry.
Certification courses in Microbiology.
Certificate programme in Laboratory Techniques.

The fees at Kuriakose Elias College Mannam, Kottayam for MSc Psychology is 1985 rupees.