Ammonia can be produce according to the following reactionN2 + 3H2------>Fe2O3/ Al2O3, K2O 2NH3

Explanation

In the given reaction for the production of ammonia, N₂ + 3H2 → 2NH3, the catalysts listed are Al2O3, K2O, and Fe2O3.The correct answer is:b. Fe203 is a catalyst while A1203 and K2O are promotersIn this reaction, Fe2O3 acts as the catalyst because it provides a surface for the reaction to occur without being consumed in the process. The catalyst facilitates the reaction by lowering the activation energy required for the formation of ammonia.On the other hand, Al2O3 and K₂O act as promoters. Promoters are substances that enhance the activity of the catalyst but do not directly participate in the reaction. They may aller the surface properties of the catalyst or enhance the adsorption of reactant molecules, thereby increasing the rate of the reaction.Therefore, option b is the correct answer as it correctly identifies Fe₂O, as the catalyst and Al₂O, and K₂O as promoters in the ammonia production reaction.