Hi Suda,
               When it comes to MBA in abroad, then you have take GMAT entrance exam or you can also go for GRE but for MBA, GMAT is preferable.
Not only in Canada, you can go any country with your GMAT score for MBA.

• GMAT Exam :
  

GMAT is a computer-adaptive test which assesses a persons analytical writing, quantitative, verbal and reading skills in standard written English. The full form of GMAT is Graduate Management Admission Test. This test is taken in preparation for being admitted into a graduate management program, such as MBA and Masters in Finance related courses.
              The exam will be held of 3hr 30minutes including test instruction & break.

• GMAT exam fees :
  

US $250(in Indian money around 15, 000 - 16,000 rupees)

• Eligiblity Criteria (educational qualification) :
  

There has not any Eligibility criteria for GMAT. You should have a graduation degree from a recognised University.

Almost 2,00,000 candidates appear for GMAT every year & GMAT score card is valid for 5years.

Here's the GMAT syllabus details - GMAT Syllabus