IJC H2 Chem 2012 Prelim P1 QP

1 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 9647/01 Paper 1 Multiple Choice 11 September 2012 1 hour Additional Materials: Multiple Choice Answer Sheet Data Booklet 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 PRELIM 2  INNOVA 9647/01/2012 [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 Methane was burned in an incorrectly adjusted burner. The methane was converted into a mixture of carbon dioxide and carbon monoxide in the ratio of 98:2, together with water vapour. What will be the volume of oxygen consumed when y dm 3 of methane is burned? A 1.99 y dm 3 C 0.995 y dm 3 B 1.995y dm 3 D 0.99 y dm 3 2 To identify an oxide of nitrogen, 0.10 mol of the o xide was mixed with 10 dm 3 of hydrogen gas and passed over a heated catalyst. At the end of t he reaction, 0.4 dm 3 of hydrogen gas remained. The ammonia produced required 125 cm 3 of 1.6 mol dm -3 HC l for neutralisation. All gasoues volumes were measured at room temperature and pressure. What is the formula of the oxide of nitrogen? A NO C NO 2 B N2O D N2O4 3 A 2 g sample of hydrogen at temperature T and of volume V exerts a pressure of p. Deuterium, 2 1H is an isotope of hydrogen. Which of the following would also exert a pressure p at the same temperature? A 2 g of deuterium of volume V B 4 g of deuterium of volume ½ V C a mixture of 1 g of hydrogen and 2 g of deuterium of total volume V D a mixture of 2 g of hydrogen and 1 g of deuterium of total volume 2 V 4 Which atom has the highest ratio of unpaired electrons to paired electrons in its ground state? A boron C nitrogen B carbon D oxygen 5 Which one of the following pairs consist of a planar molecule and a polar molecule? A C6H5CH 3 and CO 2 C CH 2=CHCHO and CH 3OCH 3 B C6H12 and H 3PO 4 D C6H6 and CC l4

3 PRELIM 2  INNOVA 9647/01/2012