Give an example for heterogeneous catalysis.

i) What type of adsorption involves Van der Waals force of attraction? ii) Give an example for homogeneous catalysis.

(a)Write any two differences between lyophilic sols and lyophobic sols (b) What are the differences between physisorption and chemisorption (c) Give an example for homogeneous catalysis

Give an example for homogenous catalysis.

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