AES Prelim P1

Name: ………………………………( ) This Question Paper consists of 19 printed pages including this page. [Turn over AASSUMPTION ENGLISH SCHOOL PRELIMINARY EXAMINATION 2024 CHEMISTRY 6092 / 01 ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL ASSUMPTION ENGLISH SCHOOL LEVEL: Sec 4 Express DATE: 28 August 2024 CLASS: Sec 4/1 DURATION: 1 hour Additional materials provided: 1 sheet of OAS paper INSTRUCTIONS TO CANDIDATES Do not open this booklet until you are told to do so. Write your NAME and INDEX NUMBER at the top of this page and on the OAS paper. Shade your index number on the OAS paper. MULTIPLE CHOICE QUESTIONS (40 marks) There are 40 questions in this section. Answer ALL questions. For each question, there are four possible answers A, B, C and D. Choose the correct answer and record your choice in soft or 2B pencil on the OAS paper provided. Do NOT fold or bend the OAS paper. For Examiner’s use: Paper 1 / 40 A copy of the Periodic Table is provided on Page 19. The use of an approved scientific calculator is expected where appropriate. At the end of the examination, hand in your OAS paper and question booklet separately.

2 6092/01/4E/PRELIM/2024 SECTION A: MULTIPLE CHOICE QUESTIONS [40 marks] There are forty questions in this section. 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 on the OAS in soft pencil. 1 An experiment was conducted to measure the temperature change caused by adding a known quantity of sodium carbonate to an excess of dilute acid. Besides a thermometer and styrofoam cup, these apparatus are available. 1 gas syringe 2 mass balance 3 measuring cylinder 4 stopwatch Which pieces of apparatus are needed for this experiment? A 1, 2, 3 and 4 B 2 and 3 only C 2 and 4 only D 4 only 2 An impure sample of compound X melted over a range of 162°C – 168°C. X was purified and its melting point was measured again. Which row correctly shows the method of purifying X and the melting point of pure X? method of purifying X melting point of pure X / °C A crystallisation 160 B distillation 160 C crystallisation 170 D distillation 170

3 6092/01/4E/PRELIM/2024 [Turn over 3 Chromatography was carried out to examine the dyes present in a sample of paint. The same sample of paint was used for the two chromatograms shown below. Which statement best explai