$H_2C=CH_2 + O_2 \xrightarrow{\text{aqueous medium}} CH_3CHO$. What is the catalyst used in the above green reaction?

The variation of the rate of an enzyme-catalyzed reaction with substrate concentration is correctly represented by which graph?

Which reaction characteristics are changing by the addition of a catalyst to a reaction at constant temperature: $(i)$ Activation energy,$(ii)$ Equilibrium constant,$(iii)$ Reaction entropy,$(iv)$ Reaction enthalpy?

Which one of the following is an example of homogeneous catalysis?

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

Which of the following statements is incorrect regarding a catalyst?