2024 CHIJ Sec 4E Prelim Chemistry P1

CHIJSec/2024/OLevelPrelim/6092/01 [Turn over O CONVENT OF THE HOLY INFANT JESUS SECONDARY Preliminary Examination in preparation for the General Certificate of Education Ordinary Level 2024 CANDIDATE NAME CLASS REGISTER NUMBER CHEMISTRY Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet 6092/01 26 August 2024 1 hour 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 on the 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 CHIJSec/2024/OLevelPrelim/6092/01 1 A laboratory assistant has a mixture of solid sulfur and solid carbon. Sulfur is very soluble in carbon disulfide (boiling point 46°C) and slightly soluble in water. Carbon is insoluble in both solvents. A sample of the mixture is shaken with water. This is P. Another sample of the mixture is shaken with carbon disulfide. This is Q. Which procedure is used to prepare a pure sample of sulfur? A P is distilled and the distillate is evaporated to dryness to obtain sulfur. B P is filtered and the filtrate is allowed to evaporate to dryness to obtain sulfur. C Q is filtered and the residue is allowed to evaporate to dryness to obtain sulfur. D Q is filtered and the filtrate is allowed to evaporate to dryness to obtain sulfur. 2 A student was given 4.0 g of magnesium carbonate powder and 100 cm 3 of 0.1 mol/dm 3 hydrochloric acid. He wants to determine the rate of reaction by measuring the change in mass of the reaction mixture. Which apparatus is not likely to be used in this experiment? A conical flask B electronic mass balance C stopwatch D test-tube 3 In which situations do the particles move closer together? 1 A gas is heated from 0 C to 25 C. 2 The pressure of a gas is increased. 3 Steam condenses to form water. 4 Water evaporates at room temperature. A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

3 [Turn over CHIJSec/2024/OLevelPrelim/6092/01 4 Two bottles are placed close together inside a large container at a temperature of 90 °C. One bottle contains 1.0 g of sulfu