One Question per Day on Synthetic Ammonia (Series 60)

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I. Multiple-choice questions (each question has 4 options, of which only 1 is correct; fill in the correct option in the brackets) Continuing from Series 59, 141: 141. The reason why catalysts can accelerate reaction rates is ( ). A. The addition of a catalyst increases the equilibrium conversion rate of the reaction. B. The addition of a catalyst makes △rGm of the reaction more negative. C. The addition of a catalyst alters the reaction pathway and reduces the activation energy of the reaction. D. The addition of a catalyst increases the value of the reaction enthalpy. 142. The solid catalyst does not contain (). A. Active component B. Carrier C. Catalyst assistant D. Activation energy 143. The purpose of pressure testing containers and pipelines is to check (). A. Shape and strength B. Strength and sealing performance C. Volume and leakage D. Stiffness and elasticity. 144. The substance that can cause permanent poisoning of the ammonia synthesis catalyst is ( ). A. Water vapor B. CO C. Sulfides D. O2 145. Which of the following is not a flame arrestor? A. Check valve B. Safety liquid seal C. Vent pipe D. Flame arrestor Answer: CDBCC Scoring criteria: 3 points for participation, 1 point for each correct answer