SRJC_H2_CHEM_P1

1 SERANGOON JUNIOR COLLEGE General Certificate of Education Advanced Level Higher 2 CHEMISTRY 9746/01 Preliminary Examination 28 Aug 2009 Paper 1 MCQ 1 hour Additional Materials: OMS Data Booklet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid on the OMS. Write your name and index number on the OMS 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 OMS Follow the instructions given to you on how to fill in the OMS. 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 16 printed pages and 0 blank page SRJC 2009 9746/H2/PRELIM/01 [Turn over

2 SRJC 2009 9746/H2/PRELIM/01 [Turn over Answer ALL Questions 1 3.920 g of an oxide of formula MO was completely dissolved in 30.0 cm 3 of 2.00 mol dm -3 sulphuric acid. The resulting solution was made up to 100 cm 3. 25.0 cm 3 of this solution was neutralised by 27.5 cm 3 of 0.100 mol dm-3 sodium hydroxide. What is the relative atomic mass of M? A 47.9 B 54.9 C 55.9 D 101.0 2 A commercial production of iodine involves the reduction of a solution of iodate(V) ions, IO3 , with the theoretical quantity of hydrogen sulphite ions, HSO 3  in acidic condition. The hydrogen sulphite ions are oxidised to sulphate ions, SO 4 2 while the iodate( V) ions are reduced to iodine, I2. Given H2O(l) + HSO3 ─(aq) → SO4 2─(aq) + 3H+(aq) + 2e─ How many moles of hydrogen sulphite ions are needed to r educe one mole of iodate(V) ions? A 0.4 B 1 C 2.5 D 5 3 One of the isotopes of carbon is carbon-14. Carbon-14 is radioactive and is used in carbon dating by archaeologists. Which one of the following species is isotonic and isoelectronic with respect to an atom of carbon-14? A 13C B 14N+ C 16O2+ D 17F+

3 SRJC 2009 9746/H2/PRELIM/01 [Turn over 4 Which of the following shows a graph of  P against T for an ideal gas? (P = pressure;  = density; T = temperature in C).  P  P 5 Polyurethane is used in coatings, insulators and adhesiv es. Polyurethane What are the values of the bond angles marked a and b in polyurethane? a b A 90 90 B 120 120 C 107 120 D 109.5 90 A