Iron is not used alone as a catalyst in ammonia synthesis, because

Question: Iron is not used alone as a catalyst in ammonia synthesis, because
[A].

its activity declines rapidly, if heated to above 520°C.

[B].

it decomposes ammonia.

[C].

it gets oxidised above 500°C.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.