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

Write down the use of $ZSM-5$.

In a chemical reaction,a catalyst . . . . .

Which of the following statements is wrong?

Which catalyst is used in the reaction $2KClO_3 \to 2KCl + 3O_2$?

In the titration of oxalic acid against acidic potassium permanganate,the manganous salt produced catalyzes the reaction. The manganous salt here is ..........