MI_H2_CHEM_P1 Prelim

Class Adm No Candidate Name: This document consists of 17 printed pages and 1 blank page. [Turn over 2014 Preliminary Examination II Pre-university 3 H2 CHEMISTRY 9647/01 Paper 1 Multiple Choice Thursday, 25 September 2014 1 hour Additional Materials: Multiple Choice Answer Sheet Data Booklet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, subject class and registration number on the Answer Sheet in the spaces provided unless this has been done for you. 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. The use of an approved scientific calculator is expected, where appropriate.

2 Section A For each question there are four possible answers, A, B, C and D. Choose the one you consider to be correct. 1 Use of the Data Booklet is relevant to this question. The compound KAl(SO4)2 is used in the purification of water. Which one of the following statements about 155 g of this compound is correct? A It contains 0.6 moles of cations. B It contains 7.22 x 1023 anions. C There are a total of 2.17 x 1024 ions. D There are more anions than cations. 2 15 cm 3 of a gaseous hydrocarbon was completely burnt in 50 cm3 of oxygen. The products were cooled to room temperature and then passed through aqueous NaOH. The total volume of gas decreased to 5 cm3. What is the molecular formula of the hydrocarbon? All gas volumes were measured at the same temperature and pressure. A CH4 B C2H2 C C2H4 D C2H6 3 Use of the Data Booklet is relevant to this question. Which of the following particles, on losing an electron, has a half-filled set of orbital? A Co3+ B Mn2+ C P2– D Se+ 4 Which of the following statements can be explained in terms of the existence of intermolecular hydrogen bonding? A Boiling point of pentane is higher than that of 2,2-dimethylpropane. B Hydrazine (N2H4) can act as a base. C Propan-2-ol has a higher boiling point than propanone. D Sodium hydride has a high melting point.

[Turn over 3 5 In which of the following are both chemical species non-planar? A BeCl4 2-, ●CH3 B COCl2, PCl4 + C SeO3, CCl3 – D XeF6, C2Cl4 6 For a fixed mass of an ideal gas, which of the following graphs , when plotted, does not show a curve? (ρ = density of the gas) A V against (at con