[Test Your Knowledge] Chemical Production Knowledge (45) – True or False Questions

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This post was last edited by zfy_80522 on 2010-1-5 22:37. True or False questions: (Answer format: True True True True False) 1. Rotameters belong to the category of differential pressure flow meters. 2. The solubility of gases generally increases in direct proportion to rising temperature. 3. There is a centrifugal pump that originally rotated at 3000 revolutions per minute; now that it rotates at 2000 revolutions per minute, its flow rate is 2/3 of the original value. 4. The thermal conductivity of insulating materials increases as the temperature rises. 5. In shell-and-tube heat exchangers, the tubes are generally arranged in either in-line or cross-flow patterns; when the heat transfer area remains constant, a cross-flow arrangement results in a slightly higher convective heat transfer coefficient. Answer key: Wrong, Wrong, Right, Right, Right. 1. The rotameter belongs to the variable-area flow meter type. 2. The solubility of gases generally decreases as temperature increases. Note: 1) For each correct answer in this activity, 2 wealth points are awarded, with a total score of 10 wealth points. To encourage members to answer questions carefully, those who score full marks and provide explanations for any answers they consider incorrect will be rewarded with 1 Charm point. Those who do not hide their answers or do not format them as required will, in principle, not be graded. Hidden method: http://bbs.hcbbs.com/viewthread.php?tid=492556&highight=%D2%FE%B2%D8 2) Answers from the same IP are valid only for the first post. Also, please be cautious when posting; edits are invalid (except for replies on the first floor). 3) To achieve the goal of reviewing old material to gain new insights, the answer key is released the following day. Additionally, if you have any objections to the answer key for a particular question, you can post a topic thread for in-depth discussion. 4) The total number of episodes for this series is tentatively set at 50.