(a(i))[1]
Describe this motion.
(a(ii))[3]
Explain this motion in terms of the liquid molecules and the pollen particles.
(b(i))[3]
State whether the patient feels heating, cooling or neither at the place where the ethanol is applied. Explain your answer.
(b(ii))[1]
State the effect on the rate of evaporation of ethanol if a fan blows air over the patient’s skin.