Copy of SKSS Chem Prelim Paper 1

[Turn over Name and Index Number: ( ) Class: SENG KANG SECONDARY SCHOOL 2024 PRELIMINARY EXAMINATION CHEMISTRY 6092/01 Secondary 4 Express 27 August 2024 Paper 1 Multiple Choice 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name and index number on all the work you hand in. There are forty questions in 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 Multiple Choice 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 16. The use of an approved scientific calculator is expected, where appropriate. Parent’s / Guardian’s Signature: ………………….…………... This document consists of 15 printed pages and 1 blank page. Do not turn over the page until you are told to do so.

2 [Turn over 1 Which statement is correct? A A filtrate is a substance that remains on the filter paper after filtration. B A saturated solution has the maximum amount of solvent dissolved in the solute. C A solution is a compound produced when a solute reacts with a solvent. D A substance that remains in the heated flask after distillation is called a residue. 2 The results of a paper chromatography experiment are shown. X is an aqueous solution of a salt of a Group 1 element. Y is an aqueous solution of a salt of a transition element. Which row is correct? larger Rf value requires a locating agent A X X B X Y C Y X D Y Y 3 In which changes do the particles move further apart? 1 A gas is heated from 0 °C to 25 °C. 2 Pressure is applied to a gas at a constant temperature. 3 Steam condenses to form water. 4 Water evaporates at room temperature. A 1 and 2 only B 1 and 4 only C 2 and 3 only D 3 and 4 only solvent front baseline X Y

3 [Turn over 4 Data about two compounds is given. Both compounds have a simple molecular structure. compound melting point / °C boiling point / °C H2S −85 −61 PCl3 −112 76 Two bottles are placed close together inside a large container at a temperature of 90 °C. One bottle contains 1.0 g of H2S, the other bottle contains 1.0 g of PCl3. A detector is placed in the container 2.0 m away from the two bottles. The two bottles are opened at the same time. Which row is correct? compound that reaches detector first explanation A H2S gases diffuse fas