MSHS 2024 Chem Prelim P1

Class/ Index Number / Centre Number/ ‘O’ Level Index Number / Name MARIS STELLA HIGH SCHOOL PRELIMINARY EXAMINATION SECONDARY FOUR CHEMISTRY 6092/01 Paper 1 Multiple Choice 28 August 2024 1 hour Additional Materials: Optical Test Answer Sheet (OTAS) – 1 sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your class, index number, Centre number, O level index number and name in the spaces at the top of this page. 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 answer 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 question booklet. A copy of the Periodic Table is printed on page 17. The use of an approved scientific calculator is expected, where appropriate. The total number of marks for this paper is 40. At the end of the examination, hand in the following separately: (1) Optical Test Answer Sheet (OTAS) (2) Question Paper This document consists of 17 printed pages.

2 1 A gaseous mixture of oxygen, sulfur dioxide and propene are passed through the apparatus shown below. Only one gas is collected. What is the property of the gas collected? A turns moist blue litmus red. B relights a glowing splint. C burns with a yellow flame. D turns acidified potassium manganate(VII) solution colourless. 2 An experiment was conducted to compare the diffusion of gas X and gas Y. Which pair of gases could be X and Y that will cause a decrease in the water level at P? gas X gas Y A B C D carbon monoxide fluorine methane nitrogen fluorine neon oxygen carbon dioxide gas Y gas X water level at P

3 3 A series of experiments were conducted on a substance. Which observation suggests that the substance cannot be an element? A It has a fixed melting point. B It forms two oxides when heated in air. C It produces one spot on the chromatogram. D It forms two products when the molten substance undergoes electrolysis. 4 The Rf values of some substances in ethanol are shown below. substance Rf value X 0.20 Y 0.80 Z 0.45 Which of the following cannot be concluded from the Rf value of X? A X is less soluble in ethanol than Y and Z. B X will also have the same Rf value when the solvent used is water. C The distance travelled by Y is four times the distance travelled by X. D The distance travelled by X is one-fifth the distance travelled by ethanol.

4 5 Diagrams W, X and Y show how th