“\"Chlor-alkali exam questions\" [040] activity post – please hide your replies
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This post was last edited by sunjl1981 on 2013-1-6 at 21:41. 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: Only moderator ratings are valid for this post; other ratings are invalid.) True or False questions: 1. The property that causes internal friction when a fluid flows is called viscosity ( ). 2. Vacuum degree = atmospheric pressure – absolute pressure ( ). 3. In thermochemical reaction equations, a “+” sign on the right side of the equation indicates an exothermic reaction, while a “–” sign indicates an endothermic reaction ( ). Please hide your replies; ratings will not be given unless replies are hidden. For instructions on how to hide replies, click here: Hiding method. Answer using the same IP; only the first post is valid. Also, be careful when posting – edits are invalid! Thank you all! Answer: Right, right, right # hcbbs
Right or wrong: 3. + indicates an endothermic reaction, while – indicates an exothermic reaction
1、Wrong 2、Right 3、Right
1. The property whereby internal friction arises when a fluid flows is called viscosity (True). 2. Vacuum degree = atmospheric pressure – absolute pressure (False). 3. In thermochemical reaction equations, a “+” sign on the right side of the equation indicates an exothermic reaction, while a “–” sign indicates an endothermic reaction (False)
1. True 2. False 3. True 1# Yienuo Zhang
1. Yes 2. Yes 3. Yes
1. Yes 2. Yes 3. Yes