2024 MI PU3 H2 Chem EOY P1 student (final)

Class Adm No Candidate Name: This question paper consists of 12 printed pages and 2 blank pages. 2024 Preliminary Examinations Pre-University 3 H2 CHEMISTRY 9729/01 Paper 1 Multiple Choice 18 Sep 2024 1 hour Additional materials: Multiple Choice Answer Sheet Data Booklet READ THESE INSTRUCTIONS FIRST Do not turn over this question paper until you are told to do so. Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. At the top of this page: Write your name, class and admission number in the spaces provided. On the Answer Sheet: Write your name, class and subject. Write your identification number and shade the corresponding bubbles. Ther 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. FOR EXAMINER’S USE TOTAL (30 marks)

2 For each question there are four possible answers, A, B, C, and D. Choose the one you consider to be correct. 1 Which of the following statements are correct about 1 mole of C(s)? 1 It contains 6.02 x 10²³ carbon atoms. 2 It has a mass of 12.0 g. 3 It contains 12 moles of electrons. 4 It occupies a volume of 24.0 dm³ at room temperature and pressure. A 1 and 2 only B 3 and 4 only C 1, 2 and 3 only D 2, 3 and 4 only 2 A painkiller pill contains 500 mg of acetaminophen, C₈H₉NO₂. acetaminophen What is the mass of nitrogen present in one pill? [1 g = 1000 mg] A 0.046 g B 0.093 g C 0.151 g D 0.700 g 3 Ammonia reacts with boron trifluoride in the following equation. NH₃ + BF₃ → BF₃.NH₃ What is the role of NH₃ in the reaction? A Brønsted-Lowry acid B Brønsted-Lowry base C Lewis acid D Lewis base

3 [Turn over 4 When excess potassium iodide, KI, is added to potassium iodate(V), iodine is produced. IO₃⁻ + 5I⁻ + 6H⁺ → 3I₂ + 3H₂O Which of the following statements is incorrect about the reaction? A Iodine in IO₃⁻ was reduced. B Iodine in I⁻ was oxidised. C The reaction is a disproportionation reaction. D The oxidation number of iodine in I₂ is 0. 5 Which of the following statements is not true of an element in Period 3? A It has electrons in the spherically shaped orbitals. B It has three dumb-bell shaped orbitals in its outermost shell. C It has five orbitals with four lobes in each orbital. D It is able to accommodate more than 8 electrons in its outermost shell. 6 A beam of Na+ 11 23 ions were