One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 246
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True or False: In the production of PVC via the calcium carbide method, if acetylene contains sulfur and phosphorus after purification, it indicates that the quality of the calcium carbide is too poor. ( ) Answer: ( × )
In the production of PVC via the calcium carbide method, if acetylene contains sulfur and phosphorus after purification, it indicates that the quality of the calcium carbide is too poor. ( X )
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In the production of PVC via the calcium carbide method, if acetylene contains sulfur and phosphorus after purification, it indicates that the quality of the calcium carbide is too poor. ( x )
In the production of PVC via the calcium carbide method, if acetylene contains sulfur and phosphorus after purification, it indicates that the quality of the calcium carbide is too poor. ( ) Wrong × It should be said that it’s possible, or perhaps the concentration of secondary acid is low during quiet nights, resulting in poor purification effects!
In the production of PVC via the calcium carbide method, if acetylene contains sulfur and phosphorus after purification, it indicates that the quality of the calcium carbide is too poor. (Yes)
In the production of PVC via the calcium carbide method, if acetylene contains sulfur and phosphorus after purification, it indicates that the quality of the calcium carbide is too poor. (Mistake)