GMAT

by practice more and more mock test papers of last 12 years.

GMAT and IELTS are the bases for the admission. In case you try some low ranked university only then GMAT becomes optional. IELTS will still stay. For many programs universities accept gre also. You can try gre in case GMAT seems difficult

Both are totally different streams and both have different scopes, comparison therefore is not possible. Just choose the one that you are really passionate about. Don't listen to people around you and get confused, otherwise you will go haywire. Just think, realize follow your dreams.

Any one from each.
Regards

Hello, well it depends where you want to study. Not all universities require GMAT or GRE. As an international student however you must take TOEFL or IELTS.
Regards

Dear Hemant, alongwith average colleges there are a few top universities too. Remember admission depends on the student's overall profile. Check University of Chicago Booth, UCLA, Babson College, Bentley, Boston University etc.
Best Wishes

Dear Shaunak, no accredited university will grant you admission without a GMAT and work experience. Therefore you will be required to take the GMAT.

Yes GMAT is required for you. You will only be eligible with a GMAT score. Aim for a score of 680-720.

time , ims are the coaching for GMAT exams

only practice make u win.in any field.so do it and go on.