I've also applied to concordia and dalhousie for the sept 2013 intake..M.eng industial in concordia and mechanical in dalhousie..Did they give a reason why they denied u admission at dalhousie.My profile is similar to yours:
10th: 74%
12: 75%
B.Tech mech CGPA: 7.36( NO backlogs)
IELTS: 7