2024 MI PU3 H2 Chem EOY P1 answers (final) w FIDI

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 18th 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. Write your name, class and admission number in the spaces provided at the top of this page and on the Multiple Choice Answer Sheet provided. 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 Multiple Choice Answer Sheet provided. Read the instructions on the Multiple Choice 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 question paper. The use of an approved scientific calculator is expected, where appropriate. FOR EXAMINER’S USE TOTAL (30 marks)

2 DA 1 2 3 4 5 6 7 8 9 10 A 75.6% 88.4% 4.7% 10.5% 2.3% 7.0% 24.4% 18.6% 10.5% 3.5% B 4.7% 2.3% 7.0% 10.5% 20.9% 69.8% 10.5% 37.2% 20.9% 51.2% C 11.6% 2.3% 27.9% 69.8% 53.5% 10.5% 9.3% 11.6% 29.1% 32.6% D 3.5% 2.3% 55.8% 4.7% 18.6% 8.1% 51.2% 27.9% 34.9% 7.0% DA 11 12 13 14 15 16 17 18 19 20 A 60.5% 27.9% 68.6% 29.1% 30.2% 44.2% 32.6% 32.6% 8.1% 7.0% B 25.6% 29.1% 4.7% 50.0% 34.9% 11.6% 25.6% 18.6% 12.8% 31.4% C 2.3% 9.3% 17.4% 3.5% 27.9% 3.5% 17.4% 32.6% 20.9% 9.3% D 7.0% 29.1% 4.7% 12.8% 2.3% 36.0% 19.8% 11.6% 53.5% 47.7% DA 21 22 23 24 25 26 27 28 29 30 A 23.3% 0.0% 10.5% 32.6% 12.8% 16.3% 18.6% 17.4% 73.3% 9.3% B 36.0% 2.3% 32.6% 3.5% 1.2% 18.6% 50.0% 15.1% 4.7% 22.1% C 23.3% 83.7% 18.6% 46.5% 22.1% 15.1% 24.4% 41.9% 4.7% 47.7% D 11.6% 9.3% 32.6% 11.6% 59.3% 45.3% 2.3% 19.8% 12.8% 15.1% Answer Key: 1 2 3 4 5 6 7 8 9 10 A A D C C B D D B B 11 12 13 14 15 16 17 18 19 20 B A A B B A A A D D 21 22 23 24 25 26 27 28 29 30 B C B D D D B A A C

3 [Turn over Section A 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 1 – True. 1 mole of carbon contains 1 × 6.02 × 1023 atoms (Avogadro’s number). 2 – True. Mass of C = amount × Ar = 1 × 12.0 = 12.0 g 3 – Not true. 1 mole of C contains 6 mole of protons and 6 mole of electrons. 4 – N