IJC_H2_CHEM_P1

INNOVA JUNIOR COLLEGE JC 2 PRELIMINARY EXAMINATION 2 in preparation for General Certificate of Education Advanced Level Higher 2 CANDIDATE NAME CLASS INDEX NUMBER CHEMISTRY Paper 1 Multiple Choice Additional Materials: Data Booklet Multiple Choice Answer Sheet 9746/01 24 September 2009 1 hour READ THESE INSTRUCTIONS FIRST Write your name and class on all the work you hand in. Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. 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 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 16 printed pages. Innova Junior College [Turn over

2 PRELIM 2  INNOVA 2009 9746/01/09 [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 Consider the following half-equation. C 2O4 2– 2CO2 + 2e What volume of 0.01 mol dm -3 K 2Cr2O7 is required to oxidise 20 cm 3 of an acidified solution of 0.01 mol dm-3 FeC2O4? A 10 cm3 C 30 cm3 B 20 cm3 D 40 cm3 2 A sample containing a mmonium sulphate (M r = 132) was warmed with 100 cm 3 of 0.500 mol dm –3 sodium hydroxide. When the evolution of ammonia ceased, the excess sodium hydroxide solution was neutralised with 25.00 cm 3 of 0.500 mol dm –3 hydrochloric acid. What was the mass of ammonium sulphate in the sample? A 2.48 g C 6.60 g B 4.95 g D 13.20 g 3 The value of pV is plotted against V for 2 gases, an ideal gas and a non-ideal gas, where p is the pressure and V is the volume of the gas. Which of the following gases shows the greatest deviation from ideality? A hydrogen chloride C hydrogen B nitrogen D ammonia pV Ideal gas Non-ideal gas V

3 4 The ions P 3–, S 2– and C l – have radii 0.212 nm, 0.184 nm and 0.181 nm respectively. Which one of the following correctly explains the decrease in radius in going from P3– to Cl –? A An increase in total number of electrons and in the nuclear charge. B An increase in total number of electrons with the nuclear charge remaining constant. C A constant total number of electrons and an increase in the nuclear charge. D A decrease in the total number of electrons and an increase in the nuclear charge. 5 Three substances, E, F and G have physical properties as shown. Electrical conductivity in Substance Melting point / °