Write equations. (c) One that will react with an acid. Equation. (d) Two which you would collect by displacement of air. Give a diagram and indicate what gas is collected. (e) Two which you would collect by displacement of water. Give a diagram. 7. What would you see if (a) copper nitrate were heated; (b) a flaming splinter were immersed in hydrogen gas; (c) concentrated sulphuric acid were allowed to stand on wood; (d) ammonium hydroxide in excess were added to a solution of a copper salt; (e) a mixture of sodium bromide and manganese dioxide were heated with sulphuric acid? 8. An oxide of a certain element contains 60 per cent of oxygen. Would you expect to find an oxide of the same element containing 42.9 per cent of oxygen? one containing 52.3 per cent of oxygen? Give each step of the calculation and reasoning leading to your conclusions. 9. How would you distinguish by chemical tests between (a) hydrogen peroxide and hypochlorous acid; (b) litharge and red lead; (c) the chlorides of mercury; (d) the chlorides of iron; (e) zinc sulphate and aluminum sulphate? 10. a) What is meant by the statement: "a reaction reaches an equilibrium”? b) State the conditions under which the following reaction will proceed in each direction: 3Fe+4H20 Fe304+4H2. c) Give an equation illustrating another reversible reaction. 11. a) Copper sulphate and sodium carbonate are dissolved in separate portions of pure water. Do the two solutions affect litmus alike? Explain and write an ionic equation. b) Hydrogen chloride is dissolved in water and in benzene. Do the two solutions conduct electricity equally well? Explain. 12. a) State the laws of Boyle, Charles, and Avogadro. b) Explain how the inflation of a bicycle tire with an air pump illustrates two of these laws. 13. Of what are the following composed: (a) Carborundum, (b) acetylene, (c) ethyl alcohol, (d) hard water, (e) soap? From what materials can each be made? 14. What is meant by fixation of nitrogen? Mention the two chief commercial sources of combined nitrogen. Why is the fixation of nitrogen important to a country in time of peace and why in time of war? Describe very briefly a natural method and a commercial method for the fixation of atmospheric nitrogen. 15. Give two important uses, industrial or household, of each of the following: (a) a salt of hypochlorous acid, (b) sulphur, (c) carbon, (d) sodium acid carbonate, (e) calcium hydroxide. Comprehensive Examination ENGLISH 1923 Tuesday, June 19 9 a.m.-12 m. Every question on this examination tests your power to read and write. Write clearly; watch your spelling and punctuation. Allow time for adequate revision. PART I (Answer 1, and either 2, 3, or 4.) (Fifty to sixty minutes.) 1. Choose one character from each of five novels or plays and show briefly in each case how this character changes for the better or for the worse because of one or more of the following reasons: (a) the influence of another character; (b) circumstances over which the character has no control; (c) the character's own strength or weakness. 2. Choose two books (not referred to in your answer to Question 1) which describe times and conditions different from those of to-day. Point out what there is in each book to make it valuable and interesting reading at the present time. 3. There is poetry of thought, poetry of feeling, poetry of incident. Name one poem of each kind and state its main theme. 4. Compare two essayists, or orators, in regard to the subjects which they treat, and the value which you find in their work. PART II The object of this section is, in part, to test your power of observing and of applying what you have observed to the solutions of unexpected problems. (Fifty to sixty minutes.) 1. When we are looking at a landscape we think ourselves pleased; but it is only when it comes back upon us by the fire o' nights that we can disentangle the main charm from the thick of particulars. It is just so with what is lately past. It is too much loaded with detail to be distinct; and the canvas is too large for the eye to encompass. (1) But this is no more the case when our recollections have been strained long enough through the hour-glass of time; when they have been the burthen of so much thought, the charm and comfort of so many a vigil. All that is worthless has been sieved and sifted out of them. Nothing remains but the brightest lights and the darkest shadows. When we see a mountain country near at hand, the spurs and haunches crowd up in eager rivalry, and the whole range seems to have shrugged its shoulders to its ears, till we cannot tell the higher from PART III (Fifty to sixty minutes.) Write in several paragraphs a composition of about four hundred words upon one of the following subjects. Choose such aspects of the subject as you can well discuss according to an orderly, consecutive plan. 1. The romance of maps. 2. The practical side of the study of physics or chemistry. 3. On condescension in older people. 4. My own anthology of poetry. 5. The pleasure of working with one's hands. 6. Books I have not outgrown. 7. A question of interest in my community. 8. The vanishing horse. 9. Modern plays that I like. 10. The foreign section of some American community. 11. Qualities demanded of a leader in school-life. 12. The motor (or sail) boat. 13. My education in music. 14. How schools help to make good citizens. 1923 ENGLISH 9 a.m.-12 m. SACESSE BE THEs paper tests yOU HOWE I Tead and write. Write clearly; wild is read story books in childhood not for eloquence or character y volg, sa for incident." Do you arree or disagree with this asserke? Kale does it still hold for your income reading to-day? With tre seu in mind trace your interest in books from your childhood 1. ke yo by specific reference to your reading. kow Low I act of three plays or novels, a choice made by an important FELL IN two possible courses of action determines the plot. 3 Vaaaand interest do you find in reading poetry that you do not find Mayo? Instrate your answer by reference to specific poems. 4 You made may leam about a given period from some one oration, biog The Wen of fis section is, in part, to test your power of observing and of applying ta yn'sau cbserved to the solution of unexpected problems. Fifty to sixty minutes.` 1 før bessay, then, is a tentative and personal treatment of a subject; it is 20th, dlzgońisation on a delicate theme; a species of soliloquy, as if a UZ, ROZES SKk aloud the slender and whimsical thoughts that come into no mind when he is alone on a winter evening before a warm fire, and, closing WA, Wns himself to the luxury of genial reverie. . . . . The theme Pool matters little the art of it lies in the treatment. And the important ving a that the essay should possess what may be called atmosphere and JULY 2d thus it may be held to be of the essence of the matter that Test thould appear to be natural, by whatever expenditure of toil that they may need to be achieved. . . . . The mark of the true essay is that SAM, KADAKANKITZing is all done for him. A thought is expanded in a dozen way, the most nebulous mind takes cognizance of it. The path winds af det'es itself, like a little leafy lane among fields, with the hamletChimneys and the spire, which are its leisurely goal, appearing only by gers and vistas, just sufficiently to reassure the sauntering pilgrim as to uk timate end of his enterprise. ARTHUR CHRISTOPHER BENSON. |