Calendar: 1861-1862 Page 507

508 APPLIED SCIENCES Describe the Astatic Galvanometer State upon what circumstances its sensitiveness depends What are the conditions under which Electrolysis occurs State concisely the laws of the process What is the principle of the Voltameter Describe the construction of Grove's voltaic battery State generally when you gain most by increasing the size of the plates of battery and when by using more numerous series illustrating the cases by means of Ohm's formulae Give illustrations of Isomorphism and of Allotropy and explain what is meant by each term VIII tmistvn What are the chemical characters which distinguish the classes of the alkalies and the alkaline earths from other bases How do you distinguish soda from potash and lime from baryta strontia and magnesia Mention the principal varieties of alum giving the formula for ordinary alum Describe the mode of preparing it and the chemical properties of the salt How is aluminum obtained in the metallic form What are its principal properties State the object of the processes of refining and of puddling cast-iron giving description of each operation and of its effects What is the composition of the slag from the blast furnace How do you account for its formation How does finery cinder differ from the furnace slag An alloy is supposed to consist of silver copper and zinc how would you show the presence of each of these metals and how separate them and determine the proportion of each What are the general characters of the nitrates How do you distinguish them from the chlorates and iodates Describe the preparation and properties of white lead Sketch the process for extracting metallic lead and state how it is desilverized