2025 H1 Chem JC2 Prelim P1 QP_JPJC

© Jurong Pioneer Junior College [Turn over NAME CLASS JURONG PIONEER JUNIOR COLLEGE JC2 PRELIMINARY EXAMINATION 2025 CHEMISTRY 8873/01 Higher 1 Paper 1 Multiple Choice Questions 18 September 2025 1 hour Candidates answer on the Question paper. 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 thirty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C or 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 13 printed pages and 3 blank pages.

2 © Jurong Pioneer Junior College 8873/01/J2 PRELIMINARY EXAMINATION /2025 1 Use of Data Booklet is relevant to this question. The atoms X and Y have the electronic configurations shown below. X, 1s2 2s2 2p6 3s2 3p6 4s2 ; Y, 1s2 2s2 2p5 Which compound are they likely to form? A X2Y B XY C XY2 D XY4 2 The trend of first ionisation energy for 10 consecutive elements, in Period 2 and 3, is given below. Which of the following statement is correct? A Element E and N belong to the same group. B L has a giant covalent structure. C The oxide of J is amphoteric. D The chloride of I is insoluble in water. E F G H I J K L M N proton number first ionisation energy

3 © Jurong Pioneer Junior College 8873/01/J2 PRELIMINARY EXAMINATION /2025 [Turn over 3 In which pair of molecules are both non–polar? 1 BeH2 and SO3 2 AlCl3 and CH4 3 PCl5 And SCl6 A 1, 2 and 3 B 1 and 2 only C 2 and 3 only D 1 only The following information is for Questions 4 and 5. Nitrotyrosine has been identified as an indicator for cell damage in the human body. N1 O O OH N2 O3 O H H H nitrotyrosine 4 What are the bond angles around N1, N2 and O3 of nitrotyrosine? Bond angle / ° N1 N2 O3 A 105 107 120 B 105 120 105 C 120 120 120 D 120 107 105 5 Which of the following functional groups can be found in nitrotyrosine? You may refer to the structure above. 1 Amide 2 Amine 3 Carboxylic acid A 1, 2 and 3 only B 1 and 2 only C 2 and 3 only D 3 only

4 © Jurong Pioneer Junior College 8873/01/J2 PRELIMINARY EXAMINATION /2025 6 Which row correctly describes the structure and bonding present in