Question 4: Classify the types of diffusion (B non-diffusing, equi-molar counter, surface, self, Knudsen) for the following cases with explanation 1) Particle of carbon burning in air 2) Diffusion of gasoline in air 3) Net rate of transport across any plane in macroscopic time scale is zero 4) Separation of gas particles having mean free path equal to 45 nm using membrane having pore size of 4 nm