Which of the following catalysts is commonly used during the production of ammonia by the Haber process?

  • A
    Finely divided platinum with nickel promoter
  • B
    Finely divided nickel with platinum promoter
  • C
    Finely divided iron with molybdenum promoter
  • D
    Finely divided palladium with zinc promoter

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During the preparation of $NH_3$ in Haber's process,the promoter$(s)$ used is / are -

Match the following.
List-$I$ (Reaction)List-$II$ (Catalyst)
$A$. $N_{2(g)} + 3H_{2(g)} \longrightarrow 2NH_{3(g)}$$I$. $Ni$
$B$. $2H_{2(g)} + O_{2(g)} \longrightarrow 2H_2O_{(l)}$$II$. $Pt$
$C$. $CO_{(g)} + 3H_{2(g)} \longrightarrow CH_{4(g)} + H_2O_{(g)}$$III$. $ZnO-Cr_2O_3$
$D$. $CO_{(g)} + 2H_{2(g)} \longrightarrow CH_3OH_{(g)}$$IV$. $Fe$

The correct answer is:

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