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1. |
Which of the following impurities that causes corrosion difficulties in refinery operations? |
A. | Hydrogen sulfide and carbon dioxide |
B. | Hydrogen sulfide, carbon dioxide, sulfuric acid, and sodium chloride |
C. | Sodium carbonate and sodium silicate |
D. | Hydrogen sulfide and sulfuric acid |
Answer» C. Sodium carbonate and sodium silicate | |