GMAT

Of course, there are a handful of courses which doesn't require your GMAT or GRE score. There are courses which require more than just your scores in GMAT and GRE. Sometimes, if you are part of the research project during your undergraduate programme, then that would be an added advantage for you or else a work experience will be worthwhile in securing an admission in the university you wish to get admitted. Check out this link for further reference of universities not accepting GRE and GMAT scores.

No GRE GMAT and CAT are different exam for admission in different courses and college.
GRE is Graduate Record examination in different college of united states for graduation.
GMAT is Graduate Management Admission Test for admission in many college for Management in almost all college of the world.
CAT is common Admission Test for admission in Indian Management school only. This exam allows you to take admission in various indian college.

Hi, You can refer the below link for various MBA entrance exam:
https://www.shiksha.com/mba/exams-pc-101.

Dear Jaskaran,
A GMAT score of around 500 should be considered decent to start with. However, the selection at the institute will largely depend upon various criteria such as educational background, entrance test score, extra-curriculum achievements, work experience, and personal interview performance.

IELTS and TOEFL are English Language exams to show your proficiency in the language where as GMAT is the competitive exam required to get admission abroad. If you want to pursue MBA abroad then you have to sit for IELTS or TOEFL as per the university requirements even if GMAT is optional.

Hello Avradip,
Students who appeared for CAT/GMAT/XAT are allowed by IMI-Kolkata.
Hope this answers your query.
Have a great day.

The selection of the candidates for admission to the 2018-20 batch of the PGP at IIM-A is a two-step process.
In the first step, candidates are short-listed for Academic Writing Test (AWT) and Personal Interview (PI) from among the candidates who have a valid CAT/GMAT score, who have applied to the programme and who satisfy the eligibility criteria for the programme.
For the eligibility criteria, you can visit the website.

For most of these colleges, you have to go through a GDPI process. Colleges will take your profile as well as your performance in GDPI then accordingly they will make a decision to select you. So, focus on your GDPI.

Hi,
There are some Private Institutions, which conduct their own entrance exams like Symbiosis. You could check their websites for more details regarding the same.