$A$ metal catalyst $(X)$ is used in the catalytic converter of automobiles. This prevents the release of gas $(Y)$ into the atmosphere. What are $(X)$ and $(Y)$ respectively?

Which reaction characteristics are changing by the addition of a catalyst to a reaction at constant temperature: $(i)$ Activation energy,$(ii)$ Equilibrium constant,$(iii)$ Reaction entropy,$(iv)$ Reaction enthalpy?

The term $Platforming$ is:

Match the following:

$List-I$ (Process)	$List-II$ (Catalyst)
$(A)$ Ostwald's process	$(I)$ $NO$
$(B)$ Lead Chamber process	$(II)$ $Fe$
$(C)$ Deacon's process	$(III)$ $Pt/Rh$
$(D)$ Haber's process	$(IV)$ $CuCl_2$

The correct answer is:

When $KClO_3$ is heated,it decomposes into $KCl + O_2$. If some $MnO_2$ is added,the reaction goes much faster because

The number of correct statements about modern adsorption theory of heterogeneous catalysis from the following is ..........
$A.$ The catalyst is diffused over the surface of reactants.
$B.$ Reactants are adsorbed on the surface of the catalyst.
$C.$ Occurrence of chemical reaction on the catalyst's surface through formation of an intermediate.
$D.$ It is a combination of intermediate compound formation theory and the old adsorption theory.
$E.$ It explains the action of the catalyst as well as those of catalytic promoters and poisons.