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.

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.

$A$ 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?

Platinized asbestos is used as a catalyst in the manufacture of $H_2SO_4$. It is an example of

Protons accelerate the hydrolysis of esters. This is an example of

Which of the following acts as a promoter for nickel in the hydrogenation of oils?