The decomposition of hydrogen peroxide can be slowed down by adding a small amount of acetanilide. Here,acetanilide acts as a/an ...... .

Which is True $(T)$ and False $(F)$ of the following statements?
$1.$ By catalyst,the forward reaction becomes fast and the reverse reaction becomes slow.
$2.$ $A$ catalyst decreases the potential energy of reactants and products.
$3.$ $A$ catalyst forms bonds in the reaction,so it is consumed.

$A$ substance that increases the activity of a catalyst is known as ........

Which of the following reactions requires a catalyst?

Match List-$I$ with List-$II$.

List-$I$	List-$II$
$A. N_{2(g)} + 3H_{2(g)} \rightarrow 2NH_{3(g)}$	$I. Fe_xO_y + K_2O + Al_2O_3$
$B. CO_{(g)} + 3H_{2(g)} \rightarrow CH_{4(g)} + H_2O_{(g)}$	$II. Ni$
$C. CO_{(g)} + H_{2(g)} \rightarrow HCHO_{(g)}$	$III. Cu$
$D. CO_{(g)} + 2H_{2(g)} \rightarrow CH_3OH_{(g)}$	$IV. Cu/ZnO - Cr_2O_3$

Choose the correct answer from the options given below.

Explain the adsorption theory of heterogeneous catalysis.