【Test Your Knowledge】Basic Chemical Engineering Knowledge (32)

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For the convenience of others, please write down the answers directly; do not paste the original questions, otherwise no marks will be given. Thank you for your cooperation! 1. The nominal diameter of a pipe refers to ________. A. Inner diameter B. Outer diameter C. Average diameter D. Standard diameter for design and manufacturing 2. The viscosity of a gas increases as the temperature rises________. A. Decrease B. Increase C. Remain unchanged D. Not necessarily 3. When a liquid passes through a horizontal reducer from a larger pipe to a smaller one, the relationship between energy conversion before and after the size change is ________. A. Kinetic energy is converted into static pressure energy. B. Potential energy is converted into kinetic energy. C. Static pressure energy is converted into kinetic energy. D. Kinetic energy is converted into potential energy. 4. Which of the following substances is a covalent bond compound? ________. A. Sodium sulfate B. Hydrogen chloride C. Sodium chloride D. Sodium hydroxide 5. A orifice flow meter measures the fluid flow rate by detecting the ________ change that occurs when the fluid passes through the orifice at a certain flow rate. A. Difference in flow velocity B. Difference in temperature C. Difference in flow rate D. Difference in pressure 6. Heat conduction in solid metals is caused by ________. A. Irregular motion of molecules B. Motion of free electrons C. Momentum transfer due to individual molecules D. Vibration of atomic nuclei 7. For a pure substance, under certain pressure, the relationship between its bubble point temperature and dew point temperature is ________. A. Equal B. The bubble point temperature is greater than the dew point temperature C. The dew point temperature is greater than the bubble point temperature D. No relation. 8. According to the design pressure of the container, those with ________ are considered medium-pressure containers. A.0.98≤P