JC2 Prelim 2017 RI ALL QP+ans

© Raffles Institution 2017 9729/01/S/17 [Turn Over RAFFLES INSTITUTION 2017 YEAR 6 PRELIMINARY EXAMINATION HIGHER 2 CHEMISTRY 9729/01 Paper 1 Multiple Choice 25 September 2017 1 hour Additional Materials: Multiple Choice Answer Sheet Data Booklet READ THESE INSTRUCTIONS FIRST Do not open this question booklet until you are told to do so. Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correcti on fluid. Write your name, class and index number in the spaces provided on the Answer Sheet. There are thirty 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 an d 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 ded ucted for a wrong answer. Any rough working should be done in this booklet. The use of an approved scientifi c calculator is expected, where appropriate. This document consists of 15 printed pages. KiasuExamPaper.com

2 © Raffles Institution 2017 9729/01/S/17 [Turn Over 1 A to H are consecutive elements with atom ic numbers less than 20. The g raph below shows their second ionisation energies (2 nd IE). Which of the following statements is correct? A The 2 nd IE of G is lower than that of F due to the inter-electronic repulsion between its paired s electrons. B C exists as diatomic molecules at room temperature. C The compound formed between A and E has a low melting point. D Element B is from Group 17. 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 ABCDEFGH 2 nd IE element KiasuExamPaper.com

3 © Raffles Institution 2017 9729/01/S/17 [Turn Over 2 The graph below shows the successive ionisation energies of the Period 4 element, X . Which of the following statements about X is correct? A X is Fe. B X belongs to Group 16. C X has 6 unpaired electrons in the ground state. D A stable compound, Na X O 4 , can be formed. 3 Which statement about ionic and covalent compounds is correct? A Some covalent compounds can serve as electrolytes in water. B Ionic compounds can conduct electricity in both the solid and l iquid states. C Ionic bonds and covalent bonds c annot both occur in the same co mpound. D An ionic compound will have greater covalent character if the radius of the cation is large. 0123456789 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 22 ionisation energy number of electrons removed KiasuExamPaper.com

4 © Raffles Institution 2017 9729/01/S/17 [Turn Over 4 2-Furonitrile has the following structure. Which row correctly describes th e bonding and hybridisation in the above molecule? number of S bonds number of sp C atoms number of sp 2 C atoms A 3 0 5 B 4 1 4 C 4 0 5 D 2 1 4 5 Ideal gases P and Q , initially at different pressures and temperatures, are placed in different