The catalyst used in the hydrogenation of oils is

Identify the role of glycerol in the following reaction: $2 H_2O_{2(\ell)} \xrightarrow{\text{glycerol}} 2 H_2O_{(\ell)} + O_{2(g)}$

The ability of a catalyst to accelerate the chemical reaction is known as

Identify the catalytic reaction in which both reactants are in different phases.

The main function of a catalyst in speeding up a reaction is

In the titration between oxalic acid and acidified potassium permanganate,the manganous salt formed catalyses the reaction. The manganous salt is