[Soda ash knowledge] Daily question (131) 2010.2.11
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Please hide the reply. If you do not hide it, you will not be graded in principle. Edited posts will not be graded. Specific hiding methods: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2 %D8 The title of this issue is taken from the electronic version of the book "Technical Workers Job Training Question Bank-Soda Ash Production Operator": http://bbs.hcbbs.com/thread-13140-1-2.html 1. Multiple choice questions: 1. Which of the following compounds is a base?: ( ) A. Na2CO3 B. NaOHC, NaCl D. NaHCO3. 2. When the temperature remains unchanged, the gas solubility increases with pressure and ( ) A. increases B. decreases C. remains unchanged 2. Fill in the blanks: 1. The process of absorbing ammonia is in__ _ _ _ It is carried out according to the countercurrent principle under certain conditions, so that the ammonia content in the tail gas of the ammonia absorption tower reaches__ _ _ _ _ degree.
1. Multiple choice questions: 1. Which of the following compounds is a base?: (B) A. Na2CO3 B. NaOH C. NaCl D. NaHCO3. 2. When the temperature remains unchanged, the gas solubility increases with pressure and (A) A. increases B. decreases C. remains unchanged 2. Fill in the blanks: 1. The process of absorbing ammonia is in_negative pressure_It is carried out according to the countercurrent principle under certain conditions, so that the ammonia content in the tail gas of the ammonia absorption tower reaches__ lowest__ _ degree.
1. 1.B 2.A 2. 1. The lowest negative pressure
1. Multiple choice questions: 1. Which of the following compounds is a base?: (B) A. Na2CO3 B. NaOH C. NaCl D. NaHCO3. 2. When the temperature remains unchanged, the gas solubility increases with pressure and (A) A. increases B. decreases C. remains unchanged 2. Fill in the blanks: 1. The ammonia absorption process is carried out according to the countercurrent principle under (negative pressure) conditions, so that the ammonia content in the tail gas of the ammonia absorption tower reaches the (minimum) level.
1.b 2.a 3. Negative pressure, lowest
1. B 2. A 2. Fill in the blanks: 1. Negative pressure, lowest
1. Multiple choice questions: 1. Which of the following compounds is a base?: (B) A. Na2CO3 B. NaOH C. NaCl D. NaHCO3. 2. When the temperature remains unchanged, the gas solubility increases with pressure and (A) A. increases B. decreases C. remains unchanged 2. Fill in the blanks: 1. The ammonia absorption process is carried out according to the countercurrent principle under (negative pressure) conditions, so that the ammonia content in the ammonia absorption tower tail gas reaches the (minimum) level.
1. Which of the following compounds is a base?: (B) A. Na2CO3 B. NaOH C. NaCl D. NaHCO3. 2. When the temperature remains unchanged, the gas solubility increases with pressure and (A) A. increases B. decreases C. remains unchanged 2. Fill in the blanks: 1. The ammonia absorption process is carried out according to the countercurrent principle under (negative pressure) conditions, so that the ammonia content in the tail gas of the ammonia absorption tower reaches the (minimum) level.