RVHS H2 Chem 2012 Prelim P1 QP

CANDIDATE NAME CLASS CENTRE NUMBER 1 RIVER VALLEY HIGH SCHOOL YEAR 6 PRELIMINARY EXAMINATION 6 S INDEX NUMBER H2 CHEMISTRY 9647/01 Paper 1 Multiple Choice 21 September 2012 1 hour Additional Materials:Multiple Choice Answer Sheet Data Booklet READ THESE INSTRUCTIONS FIRST Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class, centre number and index number on the 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 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. River Valley High School 9647/01/PRELIM/12 [Turn over Prelim Examination 2012 Year 6 H2 Chemistry 9647 Paper 1

2 River Valley High School 9647/01/PRELIM/12 [Turn over Prelim Examination 2012 Year 6 H2 Chemistry 9647 Paper 1 S ection 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 with a faulty Bunsen burner. As a result, a mixture of carbon dioxide and carbon monoxide was produced in a ratio of 98:2, together with water vapour. What was the volume of oxygen gas used when y dm3 of methane was burned? A (2y - 0.01 2 y) dm3 B (2y -0.01y) dm3 C (y - 0.01 2 y) dm3 D (y -0.01y) dm3 2 An ion of metal M can be oxidised by potassium manganate( VII) in acid solution to form MO3−. In an experiment, 1.25 ´ 10−3 mol of the ion of M required 37.5 cm 3 of 0.0200 mol dm−3 potassium manganate(VII) for complete reaction. What is the initial oxidation state of the ion of M? A +1 B +2 C +3 D +4 3 Which of the following statements best explains why the boiling point of CH3CH2CH2NH2 is higher than that of (CH3)3N? A There are hydrogen bonds between CH 3CH2CH2NH2 molecules but no hydrogen bonds between (CH3)3N molecules. B The covalent bonds between atoms in CH 3CH2CH2NH2 are stronger than those between atoms in (CH3)3N. C CH3CH2CH2NH2 molecule has a larger surface area than (CH3)3N molecule. D CH3CH2CH2NH2 molecule is polar but (CH3)3N molecule is not.

3 River Valley High School 9647/01/PRELIM/12 [Turn over Prelim Examination 2012 Year 6 H2 Chemistry 9647 Paper 1 4 Which of the following electrostatic attraction is not present in a sample of CH3F? A permanent dipole-permanent dipole interactions B instantaneous dipole-induced dipole interactions C hydrogen bonds D covalent bonds 5 Which of the following graph is obtained when density ( ρ) is plotted against temperature (T) for an ideal gas under constant pressure? A B