Question

The catalyst used in the catalytic reaction involving the reactants nitrogen and hydrogen in which

Answer 1

'platinum' is the catalyst used in the reaction of nitrogen and hydrogen and the reaction is called Haber`s process.

explanation:

N₂+H₂⇄NH₃

In haber`s process nitrogen from air combines with hydrogen  from the natural gasses in the presence of platinum as a catalyst to form ammonia.

Answer 2

answer is manganese dioxide