Junior Examination Eai^ers, 1892 . 
759 
EXAMINATION IN ELEMENTARY CHEMISTRY. 
Maximum Number op Marks, 200. Pass Number, 75. 
Tuesday, Koveviher 8, 1892. 
{Three hours allowed.') 
1. What broad distinctions may be drawn between Organic and Inorganic 
bodies ? Show that the distinctions are not absolute ones. 
2. Give the princiiraly.'7(ys!(5aZ properties of water. At what temperature 
lias it its greatest density, and how does this affect the freezing of water ? 
3. What compounds does Sulphur form with Iron? How are these ob- 
tained, and what are their principal uses ? 
4. Whence is Sulphate of Ammonia derived, and why is it used in agricul- 
ture ? 
5. What are the main differences, both as to kind and quantity, between 
the “ salts that occur in sea water, and those in well water ? 
6. Why should Bones be useful in agriculture ? How can their action be 
rendered more speedy by chemical treatment, and what are the chemical 
changes produced ? 
7. Define in chemical language the following ; spirits of salt ; spmts of 
wine; hartshorn ; pearl-ash ; sugar of lead ; lunar caustic. 
EXAMINATION IN MENSURATION AND LAND SURVEYINO. 
Maximum Number op Marks, 100. Pass Number, 40. 
Wednesday, Novemher 9, 1892. 
{Two hours allowed.') 
1. Two sides of a triangle are 272 ft. and 33G ft. long re.^pectively ; the 
angle opposite to the longer side is 54°: draw the triangle to the scale of 
an inch to 80 ft., and note the number of degrees in the other angles and the 
number of feet in the third side. 
2. A B C D is a rectangle ; the lengths of A B and B C are 1,011 ft. and 
842 ft. respectively : find the area in acres &c. to the nearest pole. 
If P is a point taken in A B such that A P equals 200 ft., show how to 
divide the rectangle into three equal parts by straight lines drawn through P. 
3. A stream of water flows over a horizontal sill 10 ft. long, with a 
velocity of 2^ ft. a second : if two million gallons flow over in 24 hours, what 
is the depth of the water above the sill ? N.B. — Take 25 gallons to equal 
4 cubic feet. 
4. What is the length of a chain in feet, and of a link 
in inches ? 
At the rate of an inch to 220 ft., what is the length 
in inches of a line that represents 2,0C0 links? Draw a 
line of that length and divide it so that it may be a 
scale by which distances can be read true to 20 links. 
By the scale draw a line to represent 970 links. 
5. Explain briefly the principle of the vernier. 
If a scale of inches is taken and each inch is divided 
into eight equal parts, state how to construct a vernier 
which will enable the observer to read distances true to 
the sixty-fourth part of an inch. Draw a diagram roughly 
to show the position of the scale and vernier when the 
reading is 2 p in. 
6. Plot the boundary of one side of a field from the accompanying notes, 
using a scale of one inch equal to one chain, and calculate the areas between 
A B and the boundary. 
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VOL. HI. T. S. — 12 
