26 January 2021 Total Score: Name & Number: Signature: Duration is 90 minutes. 1. Write down three of the primary functions of auxiliaries. Explain each one briefly. (15 points) 2. Classify anionic surfactants. (5 points) 3. Considering application properties, what is the superiority of non-ionic surfactants over others, and what is their weakness? (5 points) 4. What is micelle? Explain CMC using figure? (10 points) 5. Name five of the classes of auxiliaries according to their functions. (5 points) 6. Explain the mechanism of buffering by reference to the acetic acid/sodium acetate system (15 points) 7. Why are sequestering agents used in textile processing? Please explain the working mechanism of EDTA referring to the figure below. (10 points) Q=0 CH CH CH CHE 8. Classify macromolecular complexing agents. Explain formation of inclusion complex briefly. (10 points) 9. Give three examples to enzyme applications in textile processing. (10 points) 10. Explain the main mechanisms by which levelling agents operate. (15 points)