“\"Chlor-alkali exam questions\" [020] event post – please hide your replies
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This post was last edited by sunjl1981 on 2013-1-6 at 22:24. To encourage active participation from members, 3 wealth points are given for each correct answer; if a calculation process is provided, or if a valid reason is given, an additional reward of 3 to 6 wealth points is awarded. I believe it’s not about the quantity, but having a reward is enough. The key is everyone’s active participation (participation brings talent) and progressing together. (Note: This post can only have ratings from moderators; other ratings are invalid.) Question: 1. (Fill-in-the-blank) The order of filling a membrane electrolyzer is to first fill it with ___, and then with ___. For draining the tank, first drain ___, then drain ___. (Fill in “anode solution” and “cathode solution”). 2. (Single-choice question) Magnesium ions in demineralized water are generally treated with （） as a refining agent. A、HCl B、CaCO3 C、NaOH D、Na2CO3 3. (Multiple-choice question) If the membrane develops wrinkles, this can lead to ( ) during operation: A、pinholes B、cracks C、expansion. Please hide your responses; no scoring will be given if they are not hidden. For instructions on how to hide them, click here: Hiding method. Answers using the same IP are valid only for the first post. Also, be careful when posting – edits are invalid! Thank you all! Answer key: 1. Catholyte, anolyte, anolyte, catholyte 2. C 3. AB # hcbbs
Question 1: Catholyte, Anolyte, Anolyte, Catholyte. Question 2: C, Sodium hydroxide. Question 3: AB
1. Anode solution, cathode solution, cathode solution, anode solution 2.D 3.AB
Catholyte, anolyte, anolyte, catholyte C AC
1. Catholyte, anolyte, anolyte, catholyte 2. C 3. ABC
Catholyte\Anolyte\Anolyte\Catholyte cb
1 Catholyte Anolyte Anolyte Catholyte 2 NaOH 3 ABC
1. Catholyte, anolyte； Anode solution, cathode solution 2, C 3, ABC
1. Anode solution, cathode solution, cathode solution, anode solution 2. C 3. B, C
1. Cathode, anode. Cathode, Anode 2.C 3.C
1. (Fill-in-the-blank) The sequence for filling an ion-exchange membrane cell is to first fill it with the _cathode solution__, and then with the _anode solution__. During tank shutdown and liquid drainage, the _anode solution__ is drained first, followed by the _cathode solution_. (Fill in “anode solution” and “cathode solution”). 2. (Single-choice question) Magnesium ions in demineralized water are generally treated with (c) as a refining agent. A、HCl B、CaCO3 C、NaOH D、Na2CO3 3. (Multiple choice) If the membrane develops wrinkles, this can lead to (a,b) during operation: A、pinholes B、cracks C、expansion 1# box22323