1. Multiple choice questions: 2 points each, 20 points in total. Please circle the correct answer (s). There might be one or multiple correct options. 1.1 Observation of a free surface in a container suggests that_ A. There is at least one liquid in the container B. The container is filled with two different gases C. The container is filled with only one gas 1.2 Hydrostatic conditions for a fluid means_ A. Zero shear stress everywhere Constant shear stress everywhere C. Zero pressure everywhere 1.3 Check all examples of a non-Newtonian fluid in the list below. A. Toothpaste B. Water C. Yogurt D. Air E. Motor oil