19. Which of the following statement is wrong? A. In an electrochemical reaction

Question

19. Which of the following statement is wrong? A. In an electrochemical reaction, anode produces oxidants B. In an electrochemical reaction, anode extracts electrons from organic matters C. In an electrochemical reaction, cathode produces hydrogen D. In an electrochemical reaction, cathode produces oxygen 20. In a food processing company, waste oil, grease, and fat are generated. To treat this type of wastewater, which of the following processes you A. Coagulation/flocculation and sedimentation B. Membrane filtration C. Chlorination D. Air flotation 21. Benzo [a] pyrene is one of the carcinogens from tobacco smoking. Which of the following chemical structures belong to this chemical? A. C. Cs3 D. etase or for enecimen conservation

Explanation / Answer

19. C) cathode produces hydrogen

20) B. Membrane filtration

21) D Belongs to the given chemical structure.

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