ATP Dubai Open 2012, World's oldest post office

Who will be appointed as Army chief to succeed Gen.V.K.Singh?
Lt.Gen.Bikram Singh

Name the men's mixed doubles winner of the ATP Dubai Open 2012.
Mahesh Bhupathi and Rohan Bopanna

When was the World's oldest post office opened as it celebrates its 300th anniversary?
1712 in Sanquhar, London

Who won the men's singles of ATP Dubai Open 2012?
Roger Federer

Name the Indian American filmmaker who won the '2012 Rising Star Award' for his feature film '9 Eleven' at the Canada International Film Festival.
Manan Singh Katohora