@ Mike Sierra
There will be a few questions based on engines so be prepared for the same.
For the rest of you...
You can practice Aptitude and IQ test online such as 'Lumosity' and
also there a numerous free applications on face book...
Here are a few that i use on face book
Brain Buddies
Ultimate IQ
For multi tasking test use this
Play Multitask, a free online game on Kongregate
For all the above tests dont be disheartened if you dont do good at first as it takes some time to get used to it and keep practicing
