One Question per Day on Synthetic Ammonia (Series 31)

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This post was last edited by 654262293 on 2016-3-4 17:49. It’s the weekend tomorrow, so the questions are being released in advance. 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 30151: 1. Which of the following statements regarding the properties of ammonia is incorrect? A. Ammonia is highly soluble in water. B. Ammonia gas can burn in air to produce nitrogen and water. C. Liquid ammonia evaporates easily. D. When ammonia gas comes into contact with hydrogen chloride gas, white smoke is produced. 152. ( ) Gas can be used as a raw material for ammonia synthesis. A. Air B. Water C. Hemihydrate D. Mix 153. During ammonia synthesis, maintaining a hydrogen-to-nitrogen ratio of （ ） results in the highest equilibrium ammonia content. A、 1 B、2 C、3 D、4 154、During gas generation, if air is used as the gasifying agent, the lower part of the gasification zone is primarily involved in the combustion reaction between carbon and ( ). A、H2 B、CO C、CO2 D、O2 155、In the fuel layer, the function of the （ ） region is to heat and decompose the fuel, releasing volatiles. A. Ash and slag B. Carbonization C. Oxidation D. Drying Answer: B C C D B. The original answer for question 152 was semi-water gas; actually, water gas is also correct. 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