The rate of a reaction does not depend upona) Temperatureb) Concentrationc) Catalystd) None of these

d)      None of these.

Exp:       Rate of reaction depends upon all the three factor i.e, temperature, concentration and catalyst.

                As the concentration of reactants increases, the reaction rate increase

                Catalyst is a substance that increases the rate of reaction

                Rate of reaction increases with increase in temperature

D

the correct answer is d.none of this above ,because usually rate of reaction depends on temp.,conc.,catalyst.

D.