The Pamphlet Collection of Sir Robert Stout: Volume 50
University of New Zealand. — Junior Scholarship Examination. — Chemistry
page break
University of New Zealand.
Junior Scholarship Examination.
Chemistry.
1. | Explain, with equations, the action of heat on the following compounds:—CaCO3, H2CrO4, H3PO4, NaHCO3, KHSO4, MnO2, AuCl3, FeSO47H2O, H2SO4, H2O. |
2. | Show, with equations, the action of chlorine on the following bodies:—HgO, P, Ca(HO)2, KHO, KI, H2O, H2S, Sn. |
3. | In what respects do chlorine bromine and iodine resemble each other? |
4. | State what you know of the allotropic forms of carbon. |
5. | Describe fully, using equations, the process for manufacturing ammonia from the ammoniacal liquor of gasworks. |
6. | Show how phosphoric acid is manufactured from bones. |
7. | State what you know of the chlorides of mercury—their names, formulas, vapour-density, manufacture, properties, tests. |
8. | Describe, with equations, the chemical changes that take place in the blast furnace. |
9. | Explain, giving the equations, how aluminium is manufactured on the large scale. |
10. | Write down three equations for making H2S; and show by equations the action of that gas on acid solutions of salts of the following metals:—Cu. Bi, Hg, As, Sb, Sn, Pb, Cd. |
11. | A solution containing nitrates of silver, copper, iron, and calcium is put into your hands. How would you separate the metals so as to get each of them on a different filter paper? |
12. | Describe a process for extracting silver from silver-bearing galena. |