DHS Prelim P1_QP

This question paper consists of 24 printed pages and 0 blank pages. © DHS 2014 [Turn over Name: Index Number: Class: DUNMAN HIGH SCHOOL Preliminary Examination Year 6 H2 CHEMISTRY 9647/01 Paper 1 Multiple Choice 30 September 2014 60 minutes Additional Materials: Optical Mark Sheet Data Booklet INSTRUCTIONS TO CANDIDATES 1 Write your name, index number and class on this question paper. 2 There are forty 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 correct and record your choice in soft pencil on the separate Optical Mark Sheet. 3 Each correct answer will score one mark. A mark will not be deducted for a wrong answer. 4 Any rough working should be done in this booklet. 5 You may use a calculator.

2 © DHS 2014 9647/01 [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 Use of the Data Booklet is relevant to this question. A car releases 0.46 g of an oxide of nitrogen N xOy in the atmosphere. The gas released occupies a volume of 120 cm3 at room temperature and pressure. What are the values of x and y? A x = 1, y = 1 B x = 1, y = 2 C x = 2, y = 1 D x = 2, y = 4 2 In an aqueous solution, 1 mol of MnO4 – ions oxidises 3 mol of Fe2+ ions. What is the manganese–containing product in this reaction? A Mn2+ B MnO4 2– C Mn3+ D MnO2 3 The successive ionisation energies (IE) of two elements X and Y, are given below: IE / kJ mol–1 1st 2 nd 3 rd 4 th 5 th 6 th 7 th X 786 1580 3230 4360 16000 20000 23600 Y 1310 3390 5320 7450 9500 11660 33604 The compound formed when X and Y combine is most likely to be A XY3 B XY2 C X2Y D XY4 4 Which of the following deviates most from ideal gas behaviour at room temperature and pressure? A oxygen B helium C nitrogen dioxide D fluorine

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