One Question per Day on Synthetic Ammonia (Series 33)

Thread Content

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 32, 161: During the gas production stage, a high furnace temperature can increase the content of ( ) in the gas. A. H2 and N2 B. H2 and CH4 C. H2 and CO2 D. H2 and CO 162. The main function of the blowing stage is ( ). A. Raise the temperature of the fuel layer B. Prevent explosions C. Produce gas D. Recover gas. 163. In the ADA method for desulfurization, （） in the desulfurization solution can react with NaHS to form sodium metavanadate with reducing properties, and elemental sulfur is precipitated. A、NaOH B、Na2CO3 C、NaVO3 D、NaHCO3 164. CO conversion involves the reaction of CO with ( ), thereby removing most of the CO. A、H2O(g) B、H2S C、NH3 D、CH4 165. In the desulfurization solution using the ADA method, （ ） can oxidize Na2V4O9 to NaVO3. A、NaCO3 B、NaHCO3 C、reduced form of ADA D、oxidized form of ADA Answer: D A C A D The scoring scale starts at 3 points; 1 point is 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