GMAT

Hi Giriraj, GMAT is slightly tougher. I have taken both. Which exam has more scope has no correct answer as it depends from university to university and profile based.

Hello Arpit, preference is always given to candidates with significant work experience. The top Harvard, Stanford, MIT do consider freshers and you must be aware how competitive they are. You must thoroughly check the university websites and even write to them for your query. Go through Financial Times MBA Ranking.
Regards

Hi Manoj, GMAT is taken for admissions into business schools abroad, for management programs. Please visit mba.com or gmac website for relevant information.

Hi Pramod,
You must first have work experience to be eligible for MBA in UK. Secondly you must take GMAT and IELTS or TOEFL. If you are looking for colleges accepting freshers you may refer to this article
https://ask.shiksha.com/i-want-to-do-mba-but-without-cmat-or-gmat-exam-and-want-to-study-in-us-or-uk-mba-in-marketing-sir-can-it-be-possible-qna-3508177
You should consider doing a MS Management or MS Marketing.

Dear giriraj,
Work Experience is not mandatory to give gmat exam and Even any competitive exam.
All the best.

Yes Giriraj, GRE scores are accepted and converted to equivalent GMAT scores. You should see websites of the universities you plan to apply to. GMAT is however given more preference.

Hello Sasank, doing an MBA from IIM or a reputed university abroad is almost equivalent. Amongst all b schools in India only IIM features in the world rankings. However it is good to note that doing an MBA abroad is crucial for developing and identifying oneself and own interests in the real sense. The international exposure and the global network you will develop will be priceless.
Anu

no GRE is not necessary for Canada u have to score in IELTS only but u need to score 6.5 in each module 6 minimum or more than that

MAT and GMAT are the exams for entrance in MBA colleges or courses, for MA you don't have to give these exams. You must have good grades in your graduation to do MA in any of the colleges or universities.

It is difficult to target Top universities in Canada without GMAT and work experience. I would suggest you to look for other courses where there is no requirement of GMAT and work Ex.
Regards,
Anamika