【Test Your Knowledge】Basic Chemical Engineering Knowledge (284) Please hide your replies

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This post was last edited by hgjoys on 2010-1-2 00:03. In accordance with the forum’s rules, the maximum score for this activity is 15 Wealth points; giving scores based on charm is prohibited. At the same time, friendship requests and duplicate ratings are declined. Note: 3 points are awarded for each correct answer. Do not answer the questions repeatedly. Determine right or wrong; answer format: Right Wrong Right Right Wrong 1. In process piping and instrumentation diagrams, the valves on the pipes are drawn using thick solid lines along with the standard graphic symbols in the appropriate locations. 2. In chemical analysis, extraction separation is commonly used for the separation or enrichment of components with low concentrations, and it can also be employed to remove a large number of interfering elements. 3. When installing valves on horizontal pipelines, the valve stem should generally be positioned within the upper half of the circumference, and not point downward, to prevent leaks of the medium from harming the operator. 4. Professional qualifications represent the basic requirements in terms of knowledge, skills, and abilities that workers must possess to engage in a particular occupation. 5. The three essential tools for an operator are: a rag, a wrench, and a stethoscope. Reference answer: Wrong, Right, Right, Right, Right. No scoring is given in principle if it is not hidden. Thank you all! To hide the method, click here: Hide Method. Answers using the same IP are valid only for the first post; moreover, be careful when posting – edits are invalid!