M.S

If you have already done post graduation (M.Tech) in Aeronautical Engineering then you need not do MS as both MS and M.Tech are similar degrees. If you have done only B.Tech Aeronautical Engineering then MS or M.Tech will definitely be a value added additional qualification.

Yes, civil engineering is a demanding profession in Australia. Fee will depend on the university. It can range from AU$20,000 to AU$40,000 a year. You can check details on university websites.

Dear Ashik,
Difference are generally in terms of selectivity: Canadian universities are more competitive and selective compared to Australian universities, in terms of program structure MS in Canada is highly research oriented or course based which is not research based. Such segregation is not seen in Australian universities though MS programs are research based. PGD is a diploma course available both the countries, as mentioned Canada is more selective.

Hi Manthan,
Work hard on your academics and try to score atleast 75%. You may take GRE but not compulsory. IELTS must be taken because you are an international applicant. For more details please check McGill website. Every top university would require high academic grades so you must focus on it.