34 
4. State the chemical principles involved in the manufacture 
of phosphorus. 
5. Describe some of the processes which are employed for 
separating the metals from their oxides and sulphides. 
6. Give the theory of the action of mortars used for building 
purposes. 
7. Describe the manufacture of aluminium. 
8. Describe the method of estimating potassium, sodium, and 
ammonium when occurring together. 
9. Give an outline of the process of determining carbon and 
hydrogen in elementary analysis. 
10. Describe the method of preparing aniline. 
11. State the preparation, the composition, the properties, and 
the principal decompositions of oxalic acid. 
12. What are the conditions under which sugar undergoes 
butyric fermentation ? 
Series II. 
1. A mineral, on analysis, was found to contain sodium, 
aluminium, and fluorine in the following proportions : — 
Give details of calculation. 
2. Describe the action of sulphur on the alkaline carbonates at 
a high temperature, and the deportment of the resulting products 
under the influence of atmospheric air and acids. 
3. State the chemical conditions involved in coal mine accidents, 
and in some of the precautions suggested with the view of avert- 
ing them. 
4. Describe the composition of the phosphates as an illustration 
of the monobasic, bibasic, and tribasic acids. 
5. Give the composition of hydrochloric acid, of water, vapour, 
and of ammonia, by weight and volume, and state the specific 
gravities of these three compounds referred to hydrogen, 
6. Give an out-line of the manufacture of carbonate of sodium. 
7. Describe the course of analysis followed in cases of poisoning 
by arsenic. 
Sodium 
Aluminium 
Fluorine 
32*78 
13*06 
54*16 
What is the formula of the compound ? 
The following equivalent to be used : 
Sodium 
Aluminium 
Fluorine 
