RGS_2021_Y4_Chem_EYA

This Question Paper consists of 24 printed pages including the cover page. [Turn Over] INSTRUCTIONS TO CANDIDATES Write your name and register number in the spaces provided. Write in dark blue or black ink. For Section A, indicate your answers on the separate Answer Sheet provided. Answer all other questions in the space provided. All quantitative answers should include appropriate units. The use of an approved scientific calculator is expected, where appropriate. INFORMATION FOR CANDIDATES The number of marks is given in brackets [ ] at the end of each question or part question. You may be penalised for incorrect use of units and/or not giving quantitative answers to an appropriate number of significant figures. A copy of the Periodic Table is provided on the last page of the Question Paper. The total number of marks for this paper is 80 and the weighting is 40%. Raffles Girls’ School (SECONDARY) Name: Class: Register No: CHEMISTRY YEAR FOUR End-of-Year Assessment Tuesday 5 October 2021 2 hours Parent’s / Guardian’s Name: Signature: Date: Established in 1879 For examiner’s use Question / Section Marks Obtained Section A / 20 1-20 Section B / 60 21 /6 22 /7 23 /7 24 /7 25 /9 26 /10 27 /14 statement/ units/ sig. fig. Total /80

Raffles Girls’ School (Secondary) Year 4 End-of-Year Assessment 2 Section A – Multiple Choice Questions [20 marks] Answer all questions. For each question, there are four possible answers ( A, B, C, and D). Choose the most appropriate answer and record your choice in the separate Answer Sheet provided. 1 Which row shows the source and effect of the pollutant? pollutant source effect A carbon monoxide combustion of fuels global warming B oxides of nitrogen lightning irritates eyes and lungs C sulfur dioxide acid rain volcanic eruptions D unburnt hydrocarbon decay of plant matter acid rain 2 Which pair of reagents is most suitable to prepare copper(II) chloride? A copper and dilute hydrochloric acid B copper(II) hydroxide and dilute hydrochloric acid C copper(II) nitrate solution and dilute hydrochloric acid D copper(II) sulfate solution and sodium chloride solution 3 The table provides information about the electrical conductivity of four substances. substance electrical conductivity in solid state in molten state in aqueous state W no no no X yes yes no Y no yes yes Z no no yes Which row is correct? W X Y Z A copper citric acid diamond sodium chloride B citric acid sodium chloride copper diamond C diamond copper sodium chloride citric acid D sodium chloride diamond citric acid copper

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