Can we install both 32bit & 64bit Qt SDK 5.1 in a windows 64 bit machine

[aashish.lg]

I am having windows 2012 R2 X64 bit machine, where I would like to install Qt SDK 5.1 for both 32bit and 64 bit version. So that I will be able to build my application in both 32 bit and 64 bit mode.

I am using the below mention installer from the Qt-project.org Downloads section

Qt 5.1.1 for Windows 32-bit (VS 2012, 511 MB)
Qt 5.1.1 for Windows 64-bit (VS 2012, 525 MB)

I have installed Qt Visual Studio addin version 1.2.2 in the same machine.

I am not able to compile my application, it says cmd.exe exited with code 3.
Additionally when I go to add/remove program from control panel I could bale to see only one Qt SDK entry to remove , which is uninstalling QT 32 bit SDK only.

Is it possible to keep both the Qt SDK in a 64 bit windows machine?
How to uninstall Qt 64 bit SDK from my machine?

Any help will be greatly appreciated.

Regards
Ashish