Compassvale Sec 4 Exp Prelim Chem P1 2024 QP

COMPASSVALE SECONDARY SCHOOL Secondary Four Express Preliminary Examination 2024 NAME CENTRE NUMBER S CLASS INDEX NUMBER ___________________________________________________________________________ CHEMISTRY 6092/01 Paper 1 Multiple Choice 28 August 2024 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write your Centre number, class, index number and name on all the work you hand in. Write in soft pencil. 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 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 17. The use of an approved scientific calculator is expected, where appropriate. ___________________________________________________________________________ This document consists of 17 printed pages and 1 blank page. Set by: Ms Tay SW [Turn over

2 1 A student makes aqueous copper(II) sulfate by adding an excess of copper(II) oxide powder to warm dilute sulfuric acid and stirs the mixture. Which apparatus should be used to separate aqueous copper( II) sulfate from the excess copper(II) oxide? A beaker and tripod stand B burette C filter funnel and paper D measuring cylinder 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 solvent front start line X Y

3 3 The boiling point of liquid X is 118 °C and it is soluble in water. Which is most likely to be the boiling point of water if it contains a small quantity of X? A 98 °C B 102 °C C 116 °C D 120 °C 4 The conical flask contains compound X which is present in liquid and gaseous states. Which statement is correct? A Energy is gained when X changes from liquid to gas. B In gaseous state