In Haber process for the synthesis of ammonia which of the following c

1.	In Haber process for the synthesis of ammonia which of the following catalysts are used ?
Answer» `Fe, K_(2)O` `K_(2),Al_(2)O_(3)` `Fe,Al_(2)O_(3)` `Fe, K_(2)O, Al_(2)O_(3)` Answer :D

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