1. An aqueous solution of a sulphate is made from a solid hydroxide, of a metal M, by the reaction:M(OH)2 (s)+ H2SO4(aq)+2H2O(l)For which hydroxide would the method not work?A. barium hydroxide B. Copper(II) hydroxideC. iron (II) hydroxideD. magnesium hydroxide2. An element X forms a positive ion with the electronic structure 2,8,8. What is the proton(atomic) number of X?A. 16B. 17C. 18D. 193. A coin is analysed by dissolving it in nitric acid. To the resulting solution an excess of aqueous ammonia is added and the mixture is filtered. A brown precipitate remains in the filter paper and a deep blue solution is obtained as the filtrate. Which metals does the coin contain?A. aluminium and copperB. copper and ironC. iron and leadC. lead and zinc4. Which statement about the numbers of particles in atoms is correct? Apart from hydrogen, most atoms containA. more neutrons than protonsB. more protons than neutronsC. more electrons than protonsD. more protons than electrons5. Which metal has a soluble carbonate, chloride and sulphate?A. bariumB. calciumC. copperD. potassium6. Iron is extracted from its ore haematite. Fe2O3, by a reduction process in the blast furnace. Which equation for reactions in the blast furnace shows the formation of the reducing agent?A. CaCO3--->CaO+CO2B. CaO+SiO2--->CaSiO3C. CO2+C---> 2COD. C+O2--->CO27. The steel bodies of cars can be protected from rusting by spraying them with zinc. Why is zinc used?A. zinc doesn't react with acidic exhaust fumes.B. zinc forms a stable compound with iron.C. zinc has a high melting point.D. zinc is higher in the reactivity series than iron.8. Solid Y is insoluble in water. It gives off a gas when heated and also when reacted with dilute sulphurid aced. What is Y?A. copper(II) carbonateB. sodium carbonateC. sodium nitrateD. zinc oxide9. Carbohydartes, proteins, fats and Terylene are macromolecules. Which element is found in only one of these macromolecules?A. carbonB. hydrogenC. nitrogenD. oxygen10. What is not an example of oxidation?A. converting iron(III) salts into iron(II) salts.B. converting magnesium atoms into magnesium ionsC. dissolving of a copper anode during electroysisD. liberating chlorine from a chloride
