CJC_H2_CHEM_P1 Prelim

CATHOLIC JUNIOR COLLEGE Preliminary Examination 2009 Higher 2 CHEMISTRY 9746/01 Paper 1 Multiple Choice 17 September 2009 1 hour Additional Materials: Multiple Choice Answer Sheet Data Booklet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use correction fluid. Write your name and class on the MCQ Answer Sheet in the spaces provided. 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 Answer sheet. Read the instructions on the MCQ 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 13 printed pages and 1 blank page. CJC Chemistry Department © CJC 2009

 CJC 2009 9746/01/prelim/09 2 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 in soft pencil on the separate answer sheet provided. 1 Which statement about one mole of a gas is always true? A It has the same mass as one mole of hydrogen gas. B It contains the same number of particles as 1/12 mole of 12C C It occupies the same volume as one mole of ethane gas under the same conditions. D It undergoes a redox process involving transfer of one mole of electrons. 2 The following diagram illustrates the variation of a physical property with increasing atomic number across a certain Period. Which of the following is the physical property sh own? A atomic radius B melting point C first ionisation energy D electrical conductivity 3 Which of the following is not a disproportionation reaction? A Cu 2O(s) + H2SO 4(aq) → Cu(s) + CuSO 4(aq) + H2O(l) B 2 NaOH(aq) + C l2(aq) → NaC l(aq) + NaC lO(aq) C 2 H 2S(g) + SO 2(g) → 3 S(s) + 2 H2O(g) D 2 H 2O2(aq) → 2 H2O( l) + O2(g) 4 25.0 cm 3 of a 0.0200 mol dm -3 solution of a compound of element D is reduced by reaction with Sn, which is oxidised to Sn 2+ in the process. If the resulting solution required 10.0 cm 3 of 0.0200 mol dm -3 of acidified KMnO 4 to oxidise D back to its original oxidation state, what is the mass of tin required in the first reaction? A 0.0100 g B 0.0238 g C 0.0357 g D 0.0595 g atomic no.

 CJC 2009 9746/01/prelim/09 3 5 Chlorine has two isotopes, 35 Cl and 37 Cl. In an experiment, a sample of chlorine was vapourised and ionised at high temperatures and passed through an electric field. The following sets of deflections were observed. Which of the species could have produced the series of lines in set I? A 35 Cl+, 37 Cl+ B 35 Cl+, 37 Cl2 + C 37 Cl+, 37 Cl2 + D 35 Cl2 +, 35 Cl37 Cl+, 37 Cl2 +