One Question per Day on Synthetic Ammonia (Series 29)

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This post was last edited by 654262293 on 2016-3-3 11:24. As the moderator penghh1985 (user number 565765) is busy, I am handling the recent issues. I. Multiple-choice questions (each question has 4 options, of which only 1 is correct; fill in the correct option in the brackets). Continuing from Series 28141: 141. (B-B-014) The most toxic substance for adsorbents is ( ). (A) Oil (B) H2O (C) Air (D) CO2 142. (B-B-014) The method for regenerating adsorbents is ( ). (A) Depressurization (B) Evaporation (C) Pressurization (D) A and C 143. (B-B-015) Which of the following is an insoluble gas? (A) O2, N2 (B) CO2, H2S (C) CO2, HCl (D) CO2, SO2 144. (B-B-015) The main solution regeneration equipment in a small-scale ammonia synthesis plant that uses natural gas as raw material is ( ). (A) D-6 (B) E-5 (C) E-4 (D) T-2 145. (B-B-015) The advantages of regenerating MEA solution are ( ). (A) High thermal energy consumption (B) Easy to degrade (C) Complex operation (D) Good absorption effect. Answers: A, D, A, D, D. The scoring scale starts at 3 points, with 1 point added for each correct answer. It should be specifically noted that respondents are required to hide their answers. If the answerer’s score is not hidden, it is halved. For methods to hide posts, see: http://bbs.hcbbs.com/thread-1551107-1-1.html