Any Resources for Micro Comprehensive Exams?
I know Harvard posts its past comprehensive exams: https://economics.harvard.edu/pages/past-general-exams. I imagine many other schools would have such resources available to the public as well. You'd just have to do a little bit of Googling to find out. 

However, I doubt that any of these past exam questions would have solutions available (and they should not be). You should try the questions on your own. If you're stuck, discuss the issues with your classmates/friends/professors. You're also welcome to ask questions here, but be sure to following our policy on homework questions and the general guidelines of this site.