2024 H1 Chem JC2 Prelim P1 (QP)_JPJC

© Jurong Pioneer Junior College [Turn over Name:____________________________________ Class:_____________ JURONG PIONEER JUNIOR COLLEGE JC2 Preliminary Examination 2024 CHEMISTRY 8873/01 Higher 1 2024 Paper 1 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 exam index number on the Answer Sheet in the spaces provided unless this has been done for you. There are 30 questions in this section. 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 9 printed pages and 3 blank pages.

2 © Jurong Pioneer Junior College 8873/01/J2 PRELIMINARY EXAMINATION /2024 1 In two separate experiments a beam of protons and a beam of electrons, travelling at the same velocity, pass through an electric field as shown. Which statements are correct? 1 The electrons are deflected to a larger extent than the protons. 2 The electron beam is deflected in the opposite direction to the proton beam. 3 The proton beam travels in a straight path towards the negatively charged plate. A 1, 2 and 3 B 1 and 2 only C 2 and 3 only D 3 only 2 The 7th, 8th, 9th and 10th ionisation energies of four consecutive elements in the Periodic Table, P, Q, R and S are shown. element 7th ionisation energy / kJ mol-1 8th ionisation energy / kJ mol-1 9th ionisation energy / kJ mol-1 10th ionisation energy / kJ mol-1 P 9941 18580 21610 25180 Q 10530 12140 22480 25860 R 9520 12810 14530 26740 S 10300 11690 15280 17110 Which element has the highest first ionisation energy? A P B Q C R D S 3 A gaseous mixture containing 10 cm 3 of C 3H8 and 90 cm 3 of oxygen was sparked and C3H8 undergoes complete reaction. The resultant mixture was passed through excess NaOH(aq). What is the final volume of gas remaining after cooling back to room temperature? A 20 cm3 B 40 cm3 C 60 cm3 D 80 cm3

3 © Jurong Pioneer Junior College 8873/01/J2 PRELIMINARY EXAMINATION /2024 [Turn over 4 Use of the Data Booklet is relevant to this question. HFC-134a is a molecule that was developed during the 1980s to replace CFCs that were causing great damage to the ozone layer. The percentage composition by mass of HFC-134a is: C, 23.5%; H, 2.0%; F, 74.5%. Which s