Rajeev, level II sample papers are not exclusively available for IMO by SOF. Although the syllabus, marking pattern, question paper format would be same as that of level I. There would only be a slight increase in the difficulty level of the paper. You can go through the Level I sample papers fpr your practice. You can find them on the given link: http://www.sofworld.org/imo/class-7/sample-model-test-papers/imo-sample-papers-class-7