AISS 2023 Sec 3 Express WA1 Question Paper

[Turn over AHMAD IBRAHIM SECONDARY SCHOOL TERM 1 WEIGHTED ASSESSMENT 1 2023 SECONDARY 3 EXPRESSName:Class:Register No.:CHEMISTRY 60922 March 202345 minutes READ THESE INSTRUCTIONS FIRSTDo not open this booklet until you are told to do so. Write down your name, class and register number in the spaces at the top of this page.This paper consists of TWO sections.Section A – 10 marksSection B – 20 marksSection A consists of 10 multiple choice questions. Answer ALL questions. For each question, four suggested answers are given. You are to choose the most appropriate one and indicate it in the boxes provided.Answer ALL questions in Section B in the spaces provided on the Question Paper.The number of marks is given in brackets [ ] at the end of each question or part question. The use of calculator is allowed in this examination. A copy of Periodic Table is provided at the last page.FOR EXAMINER’S USESection A/ 10Section B/ 20TOTAL/ 30This question paper consists of 15 printed pages

2 AISS WA1 3E/6092/2023 Section AQns12345678910AnsBBCAnswer ALL questions and write your answers in the boxes below.1Which apparatus can be used for the accurate measurement of 25.0 cm3 of a solution?I 25 cm3 pipetteII 50 cm3 buretteIII 50 cm3 beakerIV 50 cm3 measuring cylinderAII onlyBI and II onlyCII and III onlyDII and IV only

3 AISS WA1 3E/6092/2023[Turn over 2Which apparatus cannot be used to collect a gas that is denser than air and is insoluble in water?A B C D 3Which method is used to obtain copper(II) chloride crystals from a solution of copper(II) chloride?AevaporationBdistillationCcrystallisationDpaper chromatography

4 AISS WA1 3E/6092/2023 4Some properties of gas X, gas Y and concentrated sulfuric acid are given in the table below.substancepropertiesgas Xinsoluble in waterneutral gasgas Yvery soluble in wateracidic gasconcentrated sulfuric acidvery corrosivepungent, colourless liquidpowerful dehydrating agentWhich diagram shows the correct set-up to collect pure, dry sample of gas X from a sample of damp gas X contaminated with gas Y?A Bdamp gas Xand gas Ygas Xconcentrated sulfuric acidgas Xdamp gas X and gas Ywaterconcentrated sulfuric acidC Ddamp gas Xand gas Ygas Xconcentrated sulfuric aciddamp gas X and gas Yconcentrated sulfuric acidwatergas X

5 AISS WA1 3E/6092/2023[Turn over 5Ink X was suspected to contain one or more of the dyes P, R and S.Spots of each dye were placed on the starting lines of two pieces of chromatography paper. One paper was placed into water (chromatogram 1) and the other with ethanol (chromatogram 2). What is the identity of X? AR onlyBP onlyCeither P or R onlyDP, R and S6A sample of a compound, allyl isocyanide, was made from an experiment. This compound has been patented as a non-lethal weapon as it has an extremely penetrating and foul smell.Which property of the compound can be used to check its purity?AcolourBpH value Cboiling pointDsolubil