ASRJC 2022 J2 H2Prelim P1 QP

ASRJC JC2 PRELIMS 2022 9729/01/H2 [Turn over ANDERSON SERANGOON JUNIOR COLLEGE 2022 JC 2 PRELIMINARY EXAMINATION NAME:______________________________ ( ) CLASS: 22 /____ CHEMISTRY 9729/01 Paper 1 Multiple Choice 21 September 2022 1 hour Additional Materials: Multiple Choice Answer Sheet Data Booklet READ THESE INSTRUCTIONS FIRST Write in soft pencil Do not use staples, paper clips, glue or correction fluid. Write your name, class and register number 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 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. This document consists of 16 printed pages. Multiple Choice Answer Sheet Write your name, class and NRIC / FIN number, including the reference letter. Shade the NRIC / FIN number. Exam Title: JC2 PRELIM Exam Details: H2 Chemistry / Paper 1 Date: 21/09/2022

2 ASRJC JC2 PRELIMS 2022 9729/01/H2 1 In two separate experiments, a beam of protons and electrons, travelling at the same velocity is passed through an electric field as shown. Which statement is correct? A The proton beam is deflected in a parabolic path to a larger extent than the electron beam. B The proton beam travels in a straight path towards the negatively charged plate. C The electron beam travels in a straight path towards the negatively charged plate. . D The proton beam is deflected in a parabolic path towards the negatively charged plate. 2 Use of the Data Booklet is relevant to this question. The table below shows the fifth, sixth, seventh, eighth and ninth ionisation energies of an element D (Z ≤ 20) in the Periodic Table. 5th 6th 7th 8th 9th ionisation energy / kJ mol–1 6530 9353 11 019 33 606 38 676 What can be inferred about the element from the above data? A It is in the second period of the Periodic Table. B It has a valence electronic configuration of ns2np4. C Its 5th and 6th electrons are removed from different subshells. D It is likely to form an ionic compound Mg3D2 with magnesium. Beam of particles + – Source

3 ASRJC JC2 PRELIMS 2022 9729/01/H2 [Turn over 3 Which pair of molecules have a greater permanent dipole in molecule I than in molecule II? I II 1 CH3CHCl2 CH3CH2Cl 2 C C Cl H3C CH3 Cl C C Cl H3C Cl CH3 3 C C Cl Cl CH3 CH3 C C Cl H3C CH3 Cl 4 C C F H3C F CH3 C C Cl H3C Cl CH3 A 1 and 2