Teacher-Mr KETAN WADHERStudent name: Subject: ChemistryTopic: Air & Water (ORGANIC CHEMISTRY) Date of Submission: 06/09/2012 Syllabus-describe a chemical test for water-describe, in outline, the purification of the water supply in terms of filtration and chlorination-name some of the uses of water in industry and in the home-describe the composition of clean air as being approximately 79% nitrogen, 20% oxygen and the remainder as being a mixture of noble gases, water vapour and carbon dioxide-name the common pollutants in the air as being carbon monoxide, sulphur dioxide, oxides of nitrogen and lead compounds-state the source of each of these pollutants:-carbon monoxide from the incomplete combustion of carbon-containing substances-sulphur dioxide from the combustion of fossil fuels which contain sulphur compounds (leading to 'acid rain')-oxides of nitrogen and lead compounds from car exhausts-state the adverse effect of common pollutants on buildings and on health-name the uses of oxygen in oxygen tents in hospitals, and with acetylene (a hydrocarbon), in welding -describe methods of rust prevention: paint and other coatings to exclude oxygen; -describe the need for nitrogen- phosphorous- and potassium-containing fertilisers-describe the displacement of ammonia from its salts-describe the formation of carbon dioxide: as a product of complete combustion of carbon-containing substances as a product of respiration as a product of the reaction between an acid and a carbonate-describe and explain the presence of oxides of nitrogen in car exhausts and their catalytic removal-describe the separation of oxygen and nitrogen from liquid air by fractional distillation-describe sacrificial protection in terms of the reactivity series of metals & galvanising as method of rust prevention-describe the essential conditions for the manufacture of ammonia by the Haber process including the sources of the hydrogen and nitrogen, i.e. hydrocarbons or steam and air.1] June2002

2] June 2002

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3] The pie-chart shows the composition of air. June 2003

4] June 2004

5] Gas is released in all of the examples below. June 2004

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Which gas do they all produce? A carbon dioxideB hydrogenC methaneD oxygen

6] The diagram shows how water is purified. At which stage are bacteria in the water killed? Nov 2003

7] Which compound in polluted air can damage stonework and kill trees? Nov 2003A carbon dioxideB carbon monoxideC lead compoundsD sulphur dioxide

8] The apparatus shown is set up and left for a week. Nov 2003

Where would the water level be at the end of the week?

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9] Buildings made of calcium carbonate can react with ‘acid rain’. June 2002Which gas is formed as a result of this?A carbon dioxideB carbon monoxideC nitrogen dioxideD sulphur dioxide

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12] Which of the following does not need a supply of oxygen in use? June 2002A breathing apparatus in hospitalsB a fire extinguisherC an acetylene welding torchD a petrol engine

13] Which compound in polluted air can damage stonework and kill trees? Nov 2003

14] June 2003

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15] Which methods can be used to prevent the rusting of an iron girder of a bridge? June 2003

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17] Nov 2004 Paper 21] 2 of the stages in water purification are filtration and chlorination. June 04 the diagram below shows a filter tank.

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3] Nov 2003The diagram below shows a modern landfill site for the disposal of waste materials.

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The waste materials are broken down naturally in several stages.

4] Nov 2003

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5] Nov 2001

6] Nov 2004

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7] Nov 2004

Paper 31] Nov 2003

2] Nov 2004

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Question Bank1]

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