2022 RSS Chem Prelims P1

1 This document consists of 18 printed pages. RIVERSIDE SECONDARY SCHOOL SUBJECT : CHEMISTRY PAPER : 6092/01 LEVEL/STREAM : 4 Express DURATION : 1 Hour READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, register number and class on the Answer Sheet in the spaces provided unless this has been done for you. 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 question paper. A copy of the Periodic Table is printed on page 18. The use of an approved scientific calculator is expected, where appropriate. NAME: NO: CLASS: PRELIMINARY EXAMINATION 2022 ���

2 Riverside Secondary School 6092/01/4E/Prelim/2022 [Turn over 1 The apparatus shown can be used to find the rate of some chemical reactions. The rate of which reaction can be followed using these apparatus? A Cu + H2SO4 B NaOH + CuSO4 C Mg(HCO3)2 + HCl D NaOH + HCl 2 The melting and boiling points of four substances are shown in the table. Which substance will be condensed if passed through a water condenser at room temperature? hydrocarbon melting point/ oC boiling point/ oC A butane -135 0 B carbon dioxide -78.5 -78.5 C pentane -130 38 D propane -190 -45 3 An acid, X, was added to a solution of the nitrate of metal Y. A white precipitate was formed. What are X and Y? X Y A dilute hydrochloric acid calcium B dilute hydrochloric acid zinc C dilute sulfuric acid aluminium D dilute sulfuric acid barium ���

3 Riverside Secondary School 6092/01/4E/Prelim/2022 [Turn over 4 This experiment was set up to investigate the movement of gaseous substances. The water level at P moved down initially. What is substance X? A helium B methane C nitrogen D nitrogen oxide 5 A radioactive isotope of carbon has more nucleons than the non-radioactive isotope, 12C. Which row is correct for an atom of a radioactive isotope of carbon? protons neutrons electrons A 6 6 6 B 6 8 6 C 12 6 6 D 12 12 12 6 porous pots air air carbon monoxide X P Q water ���

4 Riverside Secondary School