One Question per Day on Synthetic Ammonia (Series 54)
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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 53: 1. After a chlorine leak, the best way to remove chlorine from the air is to add something to the air (). A. Spraying water B. Spraying lime water C. Spraying NaI solution D. Spraying NaOH solution 2. What is the relationship between oxygen and ozone? ( ) A. Isotope B. Allotrope C. Isomer D. The same substance 3. The usual color of high-pressure hydrogen gas cylinders used in experiments is (). A. Sky blue B. Black C. Dark green D. Yellow 4. When decarburizing Benfield steel, adding an activator to the K2CO3 solution can increase the reaction rate ( ). A. Slow down B. Speed up C. Maximum D. Minimum 5. A process flow diagram includes (). A. Process flow diagram B. Material flow diagram and home page layout C. Piping and instrumentation diagram D. All of the above. Answer: BBCBD. Scoring criteria: 3 points for participation, 1 point for each correct answer
1. After a chlorine leak, the best way to remove chlorine from the air is to introduce it into the air (B). A. Spraying water B. Spraying lime water C. Spraying NaI solution D. Spraying NaOH solution 2. The relationship between oxygen and ozone is (B,). A. Isotope B. Allotrope C. Isomer D. The same substance 3. The usual color of high-pressure hydrogen gas cylinders used in experiments is (C). A. Sky blue B. Black C. Dark green D. Yellow 4. When decarburizing Benfield steel, adding an activator to the K2CO3 solution can increase the reaction rate (B). A. Slow down B. Speed up C. Maximum D. Minimum 5. A process flow diagram includes (D). A. Process flow diagram B. Material flow diagram and home page diagram C. Piping and instrumentation diagram D. All of the above