IELTS

Hello,
Every university accepts IELTS, TOEFL, PTE, etc. Applicants can take either of these tests. You may visit a couple of websites to have an idea. Additionally, for admission to a MBA program one must take the GMAT or the GRE. These tests are not waived and no recognized business school will accept a student without GMAT or the GRE.

Hello,
I am not quite sure which course you are interested for, there are many variants offered by Seneca. If you have completed your B.Com you should ideally look for post degree or a PG Diploma. You may see here for the relevant course and its admission requirement:
http://www.senecacollege.ca/programs/fulltime-byareaofstudy/business.html

GRE and IELTS serve different purposes. IELTS (and TOEFL) is required to demonstrate English proficiency. GRE is a standardized test which is required if you are applying for admission to reputable universities like USC. So, you need to take GRE and anyone of TOEFL and IELTS.

Hi Tushar,
GRE is not required in Canada unless it is a very highly ranked university or if the particular department asks for it. But generally GRE is not common. You must take the IELTS only. But before applying, you have to check the entry requirements on the university websites.

Hi Ankur,
GMAT is strongly recommended. In addition, you will need 2-3 years of work experience to get into a well-known business school.

Hey Jerry,
The full grant will rely on the college and your profile, however, your evaluations are great and you have work encounter they are by all account not the only factors to decide your grant status. The general profile will be assessed which will incorporate your extracurricular exercises, venture work, suggestion letters and so forth. You may check colleges in USA since they are liberal while giving grants in spite of the fact that you haven't said your nation decision.

Hello Sweta,
First & foremost it's great to know your dream of studying abroad. The admission process begins almost one year prior to the commencement of the course. US should be your destination. There are plenty of institutions. However, I would advise you to go to a specialist agency dealing with sending students to the US since there are many nuances to be observed.
Best wishes!

If you have a 3-year's Bachelor's degree then Australia is better because Canada does not accept 3-years Bachelors.