BTYSS 2024 FYE 4E CHEM P1

BEATTY SECONDARY SCHOOL PRELIMINARY EXAMINATION 2024 SECONDARY FOUR EXPRESS CANDIDATE NAME CLASS REGISTER NUMBER CHEMISTRY 6092/01 Paper 1 Multiple Choice 28 August 2024 Setter: Mdm Stella Soh 1 hour 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 register number on the Multiple Choice Answer Sheet 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 in this booklet. A copy of the Periodic Table is printed on page 18. The use of an approved scientific calculator is expected, where appropriate. This document consists of 18 printed pages and 0 blank page. [Turn over

2 1 A student follows the rate of the reaction between marble chips, CaCO 3, and dilute hydrochloric acid. CaCO3 + 2HCl → CaCl2 + CO2 + H2O Which set-ups show the apparatus that are required for this experiment? A 1 and 2 only B 1 and 3 only C 2 and 4 only D 1, 2 and 4 only 2 4 1 3

3 2 The apparatus shown in the diagram was used to compare the rate of diffusion between a gas and air. A beaker containing the gas was placed over the porous pot. Which gas would cause bubbles to be observed in the beaker of water? A carbon monoxide B hydrogen chloride C methane D sulfur dioxide 3 An unknown gas, Z can be separated from a mixture of gases, X, Y and Z using the set- up as shown below. In which mixture will Z be effectively separated from? X Y Z A carbon dioxide nitrogen oxygen B hydrogen carbon dioxide nitrogen C nitrogen oxygen hydrogen D oxygen hydrogen carbon monoxide X, Y, Z copper(II) oxide Z aqueous sodium hydroxide water

4 4 A chromatography experiment was done on a brand of food colouring to determine the number of coloured dyes present. Chromatogram A shows the separation of the coloured dyes using water as a solvent. It is then rotated clockwise 90  and placed in ethanol as a solvent as shown in the chromatogram B. How many different types of coloured dyes are present in the food colouring? A 3 B 6 C 9 D 12 5 The melting and boiling points of the substances are tabulated in the table. melting point / C boiling point / C P 50 80 Q 70 500 R 65 67 S −15 −12 T 0 99 At which temperature would two liquids exist? A −20 C B −15 C C 15 C D 85 C

5 6 A beam of protons was passed through an electrostatic field between two