CSEC Chemistry · May/June 2015 · Paper 1

60 multiple-choice items from this paper. Open one to see it in full, then practise it on Quelpr and get it marked against the mark scheme.

1. Q11 mark · multiple choiceWhich of the following processes provide evidence of the particulate nature of matter? I. Capillarity II. Diffusion III. Filtration IV. Osmosis
2. Q21 mark · multiple choice'Mass number' is the number of
3. Q31 mark · multiple choiceWhich of the following elements has 7 electrons in its outer shell?
4. Q41 mark · multiple choiceAn atom that has 20 electrons when it ionizes has the same electronic configuration as
5. Q51 mark · multiple choice^{24}_{11}\text{Na} and ^{23}_{11}\text{Na} are isotopes because they
6. Q61 mark · multiple choiceSulfur and oxygen are in the same group of the periodic table because
7. Q71 mark · multiple choiceWhich of the following pairs represents equal quantities of atoms?
8. Q81 mark · multiple choiceAn ion with a single negative charge may be converted into a neutral atom by
9. Q91 mark · multiple choiceSodium reacts with water according to the equation 2\text{Na(s)} + 2\text{H}_2\text{O}(l) \rightarrow 2\text{NaOH(aq)} + \text{H}_2\text{(g)} (Molar volume of gas = 24\text{ litres at rtp}). The number of litres…
10. Q101 mark · multiple choiceA new element, R, shows chemical properties similar to the element sodium. What is the correct formula of a compound formed with R and sulfur?
11. Q111 mark · multiple choiceBarium is below calcium in Group II of the Periodic Table. When BOTH metals react with water, the MAIN differences in observation would be the rate of reaction and the
12. Q121 mark · multiple choiceWhich TWO of the elements above when combined with each other form MAINLY ionic compounds?
13. Q131 mark · multiple choiceCalcium chloride
14. Q141 mark · multiple choiceStarch
15. Q151 mark · multiple choiceA separating funnel can be used to separate a mixture of
16. Q161 mark · multiple choiceWhich of the following substances, when added to pure water, SIGNIFICANTLY increases the water's conductivity?
17. Q171 mark · multiple choiceA solution having a pH of 1 will
18. Q181 mark · multiple choiceWhich of the following halogens is a liquid at room temperature?
19. Q191 mark · multiple choiceA 'weak acid' is BEST described as one that yields a
20. Q201 mark · multiple choiceWhich of the following methods may be used in the preparation of barium sulfate in the laboratory?
21. Q211 mark · multiple choiceWhich TWO of the following statements describe acid salts? I. Their anions cannot dissociate to give hydrogen ions. II. They form a normal salt when all replaceable hydrogen of the acid is removed. III. Their anions…
22. Q221 mark · multiple choiceIn which of the following reactions is sulfur dioxide acting as an oxidizing agent?
23. Q231 mark · multiple choiceIn which of the following compounds does hydrogen have a negative oxidation number?
24. Q241 mark · multiple choiceWhen an exothermic reaction occurs, energy is
25. Q251 mark · multiple choiceWhich of the following observations is expected with the electrolysis of concentrated sodium chloride solution using graphite electrodes?
26. Q261 mark · multiple choiceA solution, X, is added to acidified aqueous potassium iodide which turns brown. Addition of starch to the solution results in a dark blue colouration. It is possible that solution X contains
27. Q271 mark · multiple choiceIn which of the following substances will electrolysis NOT occur when an electrical current is passed through it?
28. Q281 mark · multiple choiceWhich of the following factors will usually increase the rate of catalytic decomposition of hydrogen peroxide?
29. Q291 mark · multiple choiceWhich of the following substances is an amphoteric oxide?
30. Q301 mark · multiple choiceWhich of the following diagrams BEST illustrates the course of an exothermic reaction?
31. Q311 mark · multiple choiceALL members of a homologous series have similar
32. Q321 mark · multiple choiceWhich of the following molecular formulae represents the alcohol whose boiling point is 180\ ^\circ\text{C}?
33. Q331 mark · multiple choiceTo which homologous series does the following structure belong? \begin{array}{ccc} \text{H} & \text{H} & \\ | & | & \text{O} \\ \text{H}-\text{C}-\text{C}- & \text{C} \\ | & | & \diagup \\ \text{H} & \text{H} &…
34. Q341 mark · multiple choiceThe product I is
35. Q351 mark · multiple choiceThe product, polyethene, is a
36. Q361 mark · multiple choiceWhich of the following reactions occurs between propene and bromine?
37. Q371 mark · multiple choiceThe forward reaction is known as
38. Q381 mark · multiple choiceThe reverse reaction is known as
39. Q391 mark · multiple choiceWhen large alkane molecules are cracked, the products are a mixture of
40. Q401 mark · multiple choiceWhich of the following reagent(s) can be used for converting ethanol to ethanoic acid?
41. Q411 mark · multiple choiceThe fermentation of sugars, using glucose as the substrate, can be represented by the equation
42. Q421 mark · multiple choiceGlucose is converted to starch or cellulose by
43. Q431 mark · multiple choiceWhich of the following features belong to metals? I. Form solid chlorides II. Form basic oxides III. Conduct electricity when molten
44. Q441 mark · multiple choiceWhich of the following processes produces a gas which is different from the others?
45. Q451 mark · multiple choiceWhich of the following metals will NOT displace hydrogen from dilute hydrochloric acid?
46. Q461 mark · multiple choiceWhich of the following methods is used for the extraction of aluminium?
47. Q471 mark · multiple choiceWhich of the following statements about sulfur are true? I. It is used in the vulcanization of rubber. II. It is used in the extraction of iron from iron ore. III. It is used in the manufacture of explosives.
48. Q481 mark · multiple choiceWhich of the following substances conducts an electric current but remains chemically unchanged?
49. Q491 mark · multiple choiceWhich of the following gases is NOT considered to be toxic?
50. Q501 mark · multiple choiceThe compound which has the formula \text{CH}_3\ \text{CH}=\text{CH}\ \text{CH}_2\text{CH}_2\ \text{CH}_3 is
51. Q511 mark · multiple choiceWhen copper(II) carbonate is heated alone in a dry test tube, a gas is evolved and a black residue is formed. This gas is expected to
52. Q521 mark · multiple choiceIn which experiment would the amount of chlorine collected be GREATEST?
53. Q531 mark · multiple choiceWhich of the following observations is expected when aqueous silver nitrate is added to aqueous potassium chloride?
54. Q541 mark · multiple choiceWhich metal reacts vigorously with water to produce a strongly alkaline solution?
55. Q551 mark · multiple choiceWhich metal has an alloy which is used in the manufacture of aircraft?
56. Q561 mark · multiple choiceA gas, Z, has physical and chemical properties similar to ammonia. The BEST method for collecting a pure, dry sample of Z would be to pass it through
57. Q571 mark · multiple choiceThe main substances responsible for 'acid rain' are
58. Q581 mark · multiple choiceAlthough aluminium is more reactive than iron, aluminium becomes corrosion resistant when left exposed to the atmosphere while iron corrodes. This is because the
59. Q591 mark · multiple choiceWhich of the following substances is an important constituent of chlorophyll?
60. Q601 mark · multiple choiceWhich of the following gases will give a positive test with dry cobalt chloride paper?