Home > Chemistry O LevelVariant 1 May/June 2016 Report a question What’s wrong with this question? You cannot submit an empty report. Please add some details. 0% Variant 1 May/June 2016 1. Where in the Periodic Table is the metallic character of the elements greatest? C A B D 2. Hydrogen burns exothermically in oxygen. The equation for the reaction is: 2H2 + O2 โ 2H2O The table shows the bond energies involved. What is the energy given out during the reaction? โ442 kJ/mol โ3226 kJ/mol โ486 kJ/mol โ884 kJ/mol 3. Two statements about argon are given. Argon has a full outer shell of electrons. Argon is very reactive and is used in lamps. Which is correct? Statement 2 is correct but statement 1 is incorrect. Both statements are correct but statement 2 does not explain statement 1. Statement 1 is correct but statement 2 is incorrect. Both statements are correct and statement 2 explains statement 1. 4. The diagram shows a simple cell. Which statement about the process occurring when the cell is in operation is correct? Cu2+ ions are formed in solution. The zinc electrode increases in mass. The reaction Zn โ Zn2+ + 2eโ occurs. Electrons travel through the solution. 5. Which equation represents a reduction reaction? Fe3+ + e–โ Fe2+ Fe3+ โ Fe2+ + e– Fe2+ + e– โ Fe3+ Fe2+ โ Fe3+ + e– 6. A liquid X reacts with solid Y to form a gas. Which two diagrams show suitable methods for investigating the rate (speed) of the reaction? 2 and 3 2 and 4 1 and 4 1 and 3 7. The rate of diffusion of two gases, methane, CH4, and ethene, C2H4, is measured using the apparatus shown. Which gas diffuses faster and why? C A B D 8. The diagram represents the general structure of a solid Z. What is Z? silicon dioxide iodine aluminium sulfur 9. Which formula represents a polyester? D B A C 10. A student investigated the reactions of four metals, R, S, T and U, with solutions of their salts. The results are given in the table. What is the order of reactivity of the metals, most reactive first? B C D A 11. Which statements are properties of an acid? reacts with ammonium sulfate to form ammonia turns red litmus blue A C D B 12. The diagram shows the separation of petroleum into fractions. What could X, Y and Z represent? B D A C 13. Which statements explain why increasing temperature increases the rate of a chemical reaction? Heat makes the molecules move faster and collide more often. Heat makes the molecules collide with more energy so they are more likely to react. Increasing temperature lowers the activation energy for the reaction. 1 and 3 1 only 2 only 1 and 2 14. Some properties of four elements, P, Q, R and S, are shown in the table. Two of these elements are in Group I of the Periodic Table and two are in Group VII. Which statement is correct? Q is below S in Group VII. R is below S in Group VII. P is below R in Group I. Q is above R in Group I. 15. The structure of a monomer is shown. Which polymer can be made from this monomer? A D B C 16. What is an advantage of producing ethanol by fermentation of sugar compared to the catalytic addition of steam to ethene? The alcohol produced is purer. The process uses high temperature. The process is faster. The process uses renewable raw materials. 17. A compound, X, contains 40.0% carbon, 6.7% hydrogen and 53.3% oxygen by mass. The relative molecular mass, Mr, of X is 60. What is the molecular formula of X? C2H4O CH2O CH4O C2H4O2 18. Which reactions could take place at the anode during electrolysis? 2 and 4 3 and 4 1 and 4 1 and 2 19. Many car exhaust systems contain a catalytic converter. Which change does not occur in a catalytic converter? carbon dioxide โ carbon nitrogen oxides โ nitrogen carbon monoxide โ carbon dioxide unburnt hydrocarbons โ carbon dioxide and water 20. The equation for an exothermic reaction in the Contact process is shown. 2SO2(g) + O2(g) โ 2SO3(g) Which effects do increasing the temperature and using a catalyst have on the rate of formation of sulfur trioxide, SO3? D C A B 21. Three students, X, Y and Z, were told that solid P reacts with dilute acids and also conducts electricity. The table shows the studentsโ suggestions about the identity of P. Which of the students are correct? Z only X, Y and Z Y only X only 22. 25cm3 of 0.1 mol/dm3 hydrochloric acid exactly neutralise 20cm3 of aqueous sodium hydroxide. The equation for this reaction is: NaOH + HCl โ NaCl + H2O What is the concentration of the sodium hydroxide solution? 0.800 mol/dm3 0.125 mol/dm3 1.25 mol/dm3 0.080 mol/dm3 23. Aluminium is manufactured by electrolysis of aluminium oxide. The diagram shows the electrolysis cell. Which statement about the process is not correct? Cryolite is added to reduce the melting point of the aluminium oxide. The anode and cathode are made of graphite. The cathode has to be replaced regularly because it is burnt away. Aluminium ions gain electrons during the electrolysis and are reduced. 24. Which of the following could be a transition element? D C A B 25. The table shows the electronic structure of four atoms. Which two atoms combine to form a covalent compound? X and Y W and X X and Z W and Y 26. Which of the compounds shown are in the same homologous series? 1, 2 and 4 1, 2 and 3 1, 3 and 4 2, 3 and 4 27. A sample of a dye is investigated by chromatography. A line is drawn across a piece of chromatography paper and a spot of the dye is placed on it. The paper is placed in water. Which row is correct? D C B A 28. The diagram shows some properties that substances may have. To which labelled part of the diagram does 235U belong? C A D B 29. Which compounds contain the same number of carbon, hydrogen and oxygen atoms? W and Y Y and Z X and Z W and X 30. Which substance reacts with dilute sulfuric acid to form a salt that can be removed from the resulting mixture by filtration? aqueous barium chloride copper(II) carbonate copper aqueous sodium hydroxide 31. Which statement about the uses of metals is correct? Mild steel is used in the manufacture of car bodies because of its strength and resistance to corrosion. Stainless steel is used in the construction of chemical plant because of its strength and resistance to corrosion. Aluminium is used in the manufacture of aircraft because of its strength and high density. Copper is used in electrical wiring because of its strength and high density. 32. Which statements about isotopes of the same element are correct? They are atoms which have the same chemical properties because they have the same number of electrons in their outer shell. They are atoms which have the same number of electrons and neutrons but different numbers of protons. They are atoms which have the same number of electrons and protons but different numbers of neutrons. 1 and 2 3 only 2 only 1 and 3 33. Steam reacts with carbon in an endothermic reaction. Which conditions of temperature and pressure would give the largest yield of hydrogen? D C A B 34. The diagram shows an experiment to investigate how paint affects the rusting of iron. What happens to the water level in tubes P and Q? D A C B 35. A farmerโs soil is very low in both nitrogen (N) and phosphorus (P). Which fertiliser would improve the quality of this soil most effectively? B A D C 36. Ammonia is formed by a reversible reaction. The forward reaction is exothermic. Which changes in conditions would increase the yield of ammonia? D B C A 37. A new planet has been discovered and its atmosphere has been analysed. The table shows the composition of its atmosphere. Which gases are present in the atmosphere of the planet in a higher percentage than they are in the Earthโs atmosphere? carbon dioxide and oxygen nitrogen and oxygen carbon dioxide only nitrogen only 38. Which row describes whether an amphoteric oxide reacts with acids and bases? C A D B 39. Which statement describes the attractive forces between molecules (intermolecular forces)? They are weak forces which hold ions together in a lattice. They are strong ionic bonds which hold molecules together. They are strong covalent bonds which hold molecules together. They are weak forces formed between covalently-bonded molecules. 40. The paper chromatogram below was obtained from four different dyes. Which dye has an Rf value of 0.7? D A B C Your score is The average score is 0% 0% Restart quiz
