2012_RI_H1 Chem P1 - RAFFLES INSTITUTION 2012 YEAR 6 PRELIMINARY EXAMINATION Higher 1 CHEMISTRY 8872\/01 Paper 1 Multiple Choice 21 September 2012 50

2012_RI_H1 Chem P1 - RAFFLES INSTITUTION 2012 YEAR 6...

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Raffles Institution 2012 8872/01/S/12 [Turn Over RAFFLES INSTITUTION 2012 YEAR 6 PRELIMINARY EXAMINATION Higher 1 CHEMISTRY 8872/01 Paper 1 Multiple Choice 21 September 2012 50 minutes Additional Materials: Multiple Choice Answer Sheet Data Booklet READ THESE INSTRUCTIONS FIRST Do not open this question booklet until you are told to do so. Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class and index number in the spaces provided on the Answer Sheet. There are thirty questions on this paper. Answer all questions. For each question there are four possible answers A , B , C and D . Choose the one you consider to be correct and record your choice with a soft pencil on the separate Answer Sheet. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. This document consists of 11 printed pages.
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2 Raffles Institution 2012 8872/01/S/12 [Turn Over Section A For each question there are four possible answers, A , B , C , and D . Choose the one you consider to be correct. 1 Sulfur dichloride dioxide, SO 2 C l 2 , reacts with water to give a mixture of sulfuric acid and hydrochloric acid. How many moles of sodium hydroxide, NaOH, would be needed to neutralise the solution formed by adding one mole of SO 2 C l 2 to an excess of water? A 1 B 2 C 3 D 4 2 At one stage in the radioactive decay of the isotope uni0055 g2877g2870 g2870g2871g2873 , the isotope uni0050uni0062 g2876g2870 g2870g2869g2869 is present. How many α particles and β particles will be emitted in the decay? An α particle is uni0048uni0065 g2870 g2872 2+ and a β particle is uni0065 g2879g2869 g2868 . A 2 α particles and 6 β particles B 6 α particles and 2 β particles C 6 α particles and 6 β particles D 12 α particles and 12 β particles 3 Use of the Data Booklet is relevant to this question. The ion X 4+ contains 31 electrons and 46 neutrons. Which statement about X 4+ or X is correct? A X 4+ has the electronic configuration [Ar] 3d 9 . B X 4+ is deflected approximately to twice the extent as 23 Na + when subjected to an electric field. C X is a good conductor of electricity. D The elemental form of X can act as an electrophile. 4 Which of the species has a bond angle of 120°? A I C l 3 B PBr 3 C A l C l 3 D NH 3 5 Ethanol is more soluble in water than is ethyl ethanoate. Which of the following statements correctly accounts for this? A Ethanol is a polar molecule but ethyl ethanoate is non-polar. B Ethanol is able to dissociate into C 2 H 5 + and OH ions that are readily solvated but ethyl ethanoate is not able to dissociate into ions. C A hydrogen bond forms between the hydrogen of a water molecule and the oxygen of ethanol. D A hydrogen bond forms between the hydrogen of the –OH group in ethanol and the hydrogen of a water molecule.
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3 Raffles Institution 2012 8872/01/S/12 [Turn Over 6 Which row shows the correct number of g2026 and g2024 bonds present in the respective molecules?
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  • Winter '17
  • Chemistry, Sodium, Chemical reaction, Sodium hydroxide, RAFFLES INSTITUTION

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