Copy of VS 2024 Sec 4 Chem Prelim Paper 1

[Turn Over Class Register Number Name 6092/01 CHEMISTRY 24/S4PRELIM/6092/1 PAPER 1 Tuesday 9 September 2024 1 hour VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA SCHOOL VICTORIA VICTORIA SCHOOL PRELIMINARY EXAMINATION SECONDARY FOUR Additional materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Write your name, class and index number on all the work you hand in. Do not use staples, paper clips, glue or correction fluid. 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 that 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 Periodic Table is printed on page 15. The use of an approved scientific calculator is expected, where appropriate. This question paper consists of 15 printed pages, including the cover page.

2 ©Victoria School 24/S4PRELIM/6092 [Turn Over 1 A chromatogram was prepared using a mixture of substances. After drying, the chromatogram is shown in the diagram. Which statement is correct? A Locating agents are always needed to interpret a chromatogram. B There are only two substances present in the mixture. C The chromatogram is placed with start line above the solvent. D The substance at level X has a lower R f value than the substance at level Y. 2 Oxygen was prepared and collected using the apparatus as shown in the diagram below. The first tube of gas collected was discarded as it was contaminated. Which contaminant was in the gas? A hydrogen B hydrogen peroxide C manganese(IV) oxide D nitrogen solvent front start line Y X hydrogen peroxide manganese(IV) oxide water

3 ©Victoria School 24/S4PRELIM/6092 [Turn Over 3 The diagram shows a diffusion experiment. Which gas, when present in the beaker, will cause the water level at Y to rise the most? A carbon dioxide B helium C nitrogen D water vapour 4 An unknown substance X starts melting at –180 °C