Copy of AMKSS 2024 Chem P1

[Turn Over Candidate Name Form Class Index Number ANG MO KIO SECONDARY SCHOOL PRELIMINARY EXAMINATION 2024 SECONDARY FOUR EXPRESS CHEMISTRY 6092/01 Paper 1 Multiple Choice 27 August 2024 1 hour Setter: Mr Vincent Voo Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class and index number on the Question Paper and on the Answer Sheet in the spaces provided. There are forty 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 on this question paper. A copy of the Periodic Table is printed on page 16. The use of an approved scientific calculator is expected, where appropriate. This document consists of 16 printed pages.

2 AMKSS 4E Prelim Exam 6092/01/2024 1 Which apparatus can be used to determine the end-point in a volumetric experiment involving the addition of dilute hydrochloric acid to 25.0 cm3 of aqueous sodium hydroxide? A electronic balance B gas syringe C stopwatch D thermometer 2 Which of the following procedure describes the best method to obtain a pure sample of barium chloride from a mixture of barium chloride and barium sulfate salts? step 1 step 2 step 3 step 4 A dissolution crystallisation filtration evaporation B dissolution filtration evaporation crystallisation C evaporation crystallisation dissolution filtration D filtration dissolution evaporation crystallisation 3 100 cm3 of carbon dioxide gas diffuses through a porous pot in 50 s. 100 cm3 of gas X takes more than 50 s to diffuse through the same porous pot under the same room conditions. Which of the following is gas X? A ammonia B hydrogen C methane D sulfur dioxide 4 Which statement explains why sodium chloride has a lower melting point than magnesium oxide? A Sodium metal is more reactive than magnesium metal. B The attraction between Na+ and Cl− is weaker than that between Mg2+ and O2−. C The boiling point of sodium chloride is lower than that of magnesium oxide. D The bonding in sodium chloride is covalent while it is ionic in magnesium oxide.

3 AMKSS 4E Prelim Exam 6092/01/2024 [Turn Over 5 The diagram shows a molecule of a substance made up of three different elements, P, X and Y. If P is the element phosphorus, what elements could X and Y be? X Y A H O B O