Calendar: 1869-1870 Page 523

APPLIED SCIENCES 525 What is priming and how is it prevented What are the best proportions of heating surface and grate area for Cornish boiler Sketch and describe the Field Boiler What are its peculiarities and its advantages FIRST YEAR How is flatted sheet glass made Describe the method of preparing clay for the manufacture of bricks and what are the characteristics of good bricks Sketch and describe the ordinary and telescopic forms of gas-holder Sketch and describe the shaping machine showing the contrivance for giving quick return motion to the cutting tool Sketch and describe the machines for punching and shearing iron plates FIRST AND SECOND YEARS How many litres of oxygen at and 760 mm bar could you obtain from 400 grammes of pure manganese dioxide Mention other methods of procuring oxygen How juld you distinguish the following gases from each other -carbonic oxide cyanogen olefiant gas marsh gas and hydrogen Give the relative weight and molecular formula of each Describe the perparation and properties of ammonia How may its composition be ascertained Ρ Mention any gases which resemble it in constitution Describe method of determining accurately the proportion of oxygen in atmospheric air Enumerate the other components of the atmosphere and state the usual proportions of each In what form is chlorine chiefly found how is it obtained Describe two of its compounds with oxygen