GMAT

Also, take a digital course study it fast and get to practice tests. Understand this thing that every year 1 lakh plus students give CAT and join classes, but only 5k makes it to IIM so self-study goes the long way.

Hi,
Yes, you are eligible to apply but much cannot be said about admissions since NTU is very selective and your grades are not too great. Please read here about the requirements:
http://www.nbs.ntu.edu.sg/Programmes/Graduate/NanyangMBA/Pages/Home.aspx

You need above 710 score in GMAT. If you are opting for GRE nothing less than 315 is what I would say.

If you are doing graduation degree from recognised university then you are eligible for CAT and other MBA examinations.

CAT score is accepted in a large number of B-Schools in India. Appearing in CAT is a better option in comparison to MAT & GMAT. If you targeting international B-Schools for MBA then you are advised to appear for GMAT. CDS is an excellent career choice.

CAT is accepted only by Indian colleges. If you want to go abroad for higher studies then I suggest that you should take IELTS or TOEFL.

Hi Vijay,
Please check with business schools for GMAT waiver, unless you have a very strong profile b-schools won't waive it off. You may also check Executive MBA programs. Check colleges under SPP such as Thompson Rivers University, no GMAT is required by them.

Hi Ashu,
Yes, you can as not every executive MBA program requires GMAT, but they will need an extraordinary profile and extensive work experience. Check University of Sydney's Global Executive MBA. You must research by browsing different university websites for entry requirements.