Consider the reaction $2H_2O_2(aq)\rightarrow 2H_2O(l)+O_2(g)$ wen 1g of KI is added to $H_2O_2$,bubbles of $O_2$ are produced at an increased rate.When reaction is complete,mass of KI is 1g.The KI is a

Question

$\begin{array}{1 1}(a)\;product\\(b)\;reactant\\(c)\;catalyst\\(d)\;reaction\;intermediate\end{array}$