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

Which among the following can be explained by adsorption theory?

Explain: How does a catalyst increase the rate of a reaction?

Which of the following processes does not use a catalyst?

Which is True $(T)$ and False $(F)$ of the following statements?
$1.$ Catalyst forms an activated complex with partial bonds.
$2.$ Catalyst alters the enthalpy change of the reaction.
$3.$ Catalyst remains the same at the initial and end of the reaction.

$A$ catalyst remains unchanged at the end of the reaction regarding