SAT

There is no minimum cut-offs. A score of above 1350 will be good, but it will not guarantee admissions. You must have an all-rounded profile, outstanding academics, good SAT, strong extra curricular activities and high intelligence to be considered for MIT.

SAT is an entrance test required to get admission abroad. You need to check with the university or colleges of your choice to see if they require general SAT or SAT subject test.
Yes, you need to take SAT in your 12th standard to be able to pursue the undergrad course after finishing your schooling.

Full funding is very difficult to obtain unless you are an outstanding candidate yourself. SAT scores will help you obtain scholarship but not a guarantee. SAT is also not a requirement in these countries. Scholarship is on merit. High school grades, co-curricular, project works etc. will all be counted. Another very important point to note is the university deadline, always try to apply early. Scholarship chances are better if you apply early.

SAT is a standardized test for Universities admission in US which tells Universities about the college readiness and students' critical thinking skills. IELTS is only taken by students in non english speaking countries. It tells colleges that a student is fluent in English and will be able to understand the course instructions etc. in the college.

Go for TOEFL and get a score of at least 110 to be considered in the top universities. Rather than taking SAT you should go for ACT which is equally acceptable as SAT in all Universities. The format of SAT has recently changed and hence there are not many resources to prepare.

u should give TOEFL and gre.cuz IELTS is for countries other than usa

Both the exams are for different purpose, if you want to study in India go for IIT otherwise SAT for abroad, both the options are extremely good. Final call depends on your interest and preference

You have to give bith of the exams. IELTS is the International English Language Testing System which tests English proficiency across the globe. The SAT is a standardised test widely used for college admissions abroad. Both are mandatory.