The diagram below illustrates an experimental set-up in soil analysis. Study it carefully and answer the questions that follow. (a) State the aim of the ill...

The diagram below illustrates an experimental set-up in soil analysis. Study it carefully and answer the questions that follow.

(a) State the aim of the illustrated experiment. 

(b) Name the part labelled I, II, III and IV.   

(c)  A fresh sample of soil weighed 60 g. A container weighing 35 g was used to dry the soil. If both the soil and the container weighed 80 g after the experiment, determine the:
(i) weight of the dried soil; 
(ii) weight of the water lost from the soil; 
(iii) percentage of water lost from the soil.  

(d) List three forms in which water exists in the soil.