Match List-$I$ with List-$II$.
List-$I$ (Processes/Reactions) List-$II$ (Catalyst)
$A. 2 SO_{2(g)} + O_{2(g)} \rightarrow 2 SO_{3(g)}$ $I. V_{2}O_{5}$
$B. 4 NH_{3(g)} + 5 O_{2(g)} \rightarrow 4 NO_{(g)} + 6 H_{2}O_{(g)}$ $II. Pt_{(s)}-Rh_{(s)}$
$C. N_{2(g)} + 3 H_{2(g)} \rightarrow 2 NH_{3(g)}$ $III. Fe_{(s)}$
$D. \text{Vegetable oil}(l) + H_{2} \rightarrow \text{Vegetable ghee}(s)$ $IV. Ni_{(s)}$

Choose the correct answer from the options given below.

  • A
    $A-I, B-II, C-III, D-IV$
  • B
    $A-III, B-II, C-I, D-IV$
  • C
    $A-IV, B-III, C-I, D-II$
  • D
    $A-IV, B-II, C-III, D-I$

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In Haber's process for the manufacture of ammonia:

Which of the following is the first step in the mechanism of heterogeneous catalysis?

Potassium permanganate on heating gives potassium manganate,oxygen and $X$. For which of the following reactions,$X$ is used as a catalyst?

Match the Column-$I$ with Column-$II$ and mark the appropriate choice.
Column-$I$ Column-$II$
$A. V_2O_5$ $i. \text{Conversion of } SO_2 \text{ to } SO_3$
$B. Ni$ $ii. \text{Hydrogenation of oils}$
$C. MnO_2$ $iii. \text{Preparation of } O_2 \text{ from } KClO_3$
$D. Fe$ $iv. \text{Haber's process}$

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Explain the adsorption theory of heterogeneous catalysis.

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