Sorry but IMU CET question papers aren't available anywhere, not even on their official website. Some sample papers are sold in the market too, but they aren't worthy. Also some sites will claim to have it but they'll ask for a payment.

To get the idea about question paper it's better to go to IMU’s official website and try a mock paper. Give mock tests, it'll help you in the revision and will boost up your knowledge. Also, try to solve previous year questions. Prepare with NCERT. Focus on the syllabus and try to practice a lot. Put your 100% effort and just keep studying !

Good luck for your bright future !!