Calendar: 1882-1883 Page 673

670 APPLIED SCIENCES Give short outline of the manufacture of sulphuric acid and explain the chief chemical changes involved How is carbon disulphide prepared Mention its most important properties and uses Compare the properties of phosphorus in the vitreous and amorphous states How would you separate them if they were mixed together Define the terms calorific power and calorific intensity and compare carbon and hydrogen in this respect when burnt in oxygen air Can the commercial value of given coal be ascertained by analysis alone If not by what would you be guided in forming an opinion -Describe the Siemens regenerative system and explain the advantages and disadvantages attending the use of gaseous fuel as compared with solid fuel Sketch and describe Cowper's hot blast stove WhitwelPs hot blast stove By what circumstances would you be guided in the selection of suitable refractory materials for the construction of the various parts of furnaces and other metallurgical appliances What is Dolomite and what are its properties as furnace material How is it prepared for use What fare the essential points to be looked to in composing solder Compare iron tin and zinc in respect to their behaviour when exposed to damp air Why are tin and zinc used to coat iron and to what extent is the result satisfactory ii Can copper rivets be worked better hot than cold If so is that the only important reason why they are used hot 10 Describe the most important iron ores used in this country stating the kinds of pig-iron produced from each and their uses