IJC_H2_CHEM_P1_Students_Copy

INNOVA JUNIOR COLLEGE JC 2 PRELIMINARY EXAMINATION 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 9647/01 30 August 2016 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 17 printed pages and 1 blank page. Innova Junior College [Turn over

2  IJC 2016 Prelim/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 Carbon disulfide, CS2, is a volatile liquid used in the production of cellophane which is used for food packaging. On combustion, CS2 is oxidised as follows: CS2(g) + 3O2(g) CO2(g) + 2SO2(g) A 20 cm3 sample of carbon disulfide vapour is ignited with 100 cm3 of oxygen. The final volume of gas after burning is treated with an excess of aqueous alkali. Which percentage of this final volume dissolves in alkali? (All volumes are measured at room temperature and pressure.) A 20% B 40% C 60% D 80% 2 Consider the following half-equations C2O42– 2CO2 + 2e– Fe2+ Fe3+ + e– MnO4– + 8H+ + 5e– Mn2+ + 4H2O What volume of 0 .01 mol dm–3 potassium manganate(VII) is needed to completely oxidise 25.0 cm3 of an acidified solution of 0.01 mol dm–3 FeC2O4? A 5 cm3 B 7.5 cm3 C 10 cm3 D 15 cm3 3 Which electronic configuration represents an element that forms a simple ion with a charge of –3? A 1s22s22p63s23p1 B 1s22s22p63s23p3 C 1s22s22p63s23p63d14s2 D 1s22s22p63s23p63d34s2

3  IJC 2016 Prelim/9647/01 [Turn over 4 Carbon dioxide is a gas at room temperature while silicon dioxide is a solid because A carbon dioxide contains double covalent bonds while silicon dioxide contains single covalent bonds. B instantaneous dipole – induced dipole attractions are weaker than permanent dipole – permanent dipole attractions. C