VJC_H2_CHEM_P1_QN Prelim

 VJC 2014 9647/01/PRELIM/14 [Turn over VICTORIA JUNIOR COLLEGE JC 2 PRELIMINARY EXAMINATIONS Higher 2 CHEMISTRY 9647/01 Paper 1 Multiple Choice 24 September 2014 1 hour Additional Materials: Multiple Choice Answer Sheet Data Booklet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your NRIC/FIN number, name and CT group on the Answer Sheet. There are forty questions. 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 choices in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. 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 17 printed pages and 1 blank page.

2  VJC 2014 9647/01/PRELIM/14 Section A For each question there are four possible answers, A, B, C, and D. Choose the one you consider to be correct. 1 Compound X reacts with ethanoic acid in the presence of an H + catalyst to produce the compound below. What is the molecular formula of compound X? A C2H6O2 B C2H6O3 C C4H8O D C4H8O2 2 When T l+(aq) ions are reacted with VO 3 –(aq) ions, T l3+(aq) ions and V 2+(aq) ions are formed. Assuming the reaction goes to completion, how many moles of T l+(aq) and VO 3 –(aq) would result in a mixture containing equal number of moles of VO 3 –(aq) and V 2+(aq) once the reaction had taken place? moles of Tl+(aq) moles of VO3 –(aq) A 1 2 B 1 3 C 2 3 D 3 4 3 Which of the following contains only one unpaired electron? A Ga– B Se– C Te+ D As+ 4 Which of the following substances contains a central atom having eight electrons only? A NO2 B SO2 C F2O D ClO2 5 For which of the following pairs does the first species have a smaller bond angle? A SnCl2, OCl2 B H2O, H2S C I3 –, N3 – D NF3, NCl3

3  VJC 2014 9647/01/PRELIM/14 [Turn over 6 The value of PV is plotted against P at the same temperature for four gases, where P is the pressure and V is the volume of the gas. Which of the following represents the possible identities of gases W, X, Y and Z? W X Y Z A CH3CH2OH HCO2H CH3CHO CH3CH2CH3 B CH3CH2OH CH3CHO HCO2H CH3CH2CH3 C HCO2H CH3CH2OH CH3CHO CH3CH2CH3 D HCO2H CH3CHO CH3CH2OH CH3CH2CH3 7 Use of the Data Booklet is relevant to this question. Two cells are connected in series as shown in the diagram where E, F, G and H are electrodes.