Hello!
From your project description I understand that you want to convert scanned images into some computer-readable format. I would suggest XML (which is a markup language) which would make it possible to define single/multiple choice questions and their answers, the allocated time per test or per question and each question's weight.
For the presentation part I suggest either a web form or a standalone program. Each has its own advantages, depending on your hardware resources (single computer, network of computers, web server available, etc.).
I would also recomend building a tool for creating new quizzes (the XML-files that the application will read and present to the user in the desired way).
My programming language of choice would be Java should you choose either a web-based or a standalone solution. For web-based I could also use PHP which has easier to meet requirements.
As for the deadline, it could be more or less than 2 days, maximum 4 depending on the complexity of the solution you choose.
Hope this meets your requirements and looking forward to work with you,
Cristi aka Mistergreen