Bukit View Prelim P1

1 Bukit View Secondary School Secondary 4 Express Preliminary Examination 2024 BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL BUKIT VIEW SECONDARY SCHOOL SCHOOL CANDIDATE NAME CLASS INDEX NUMBER CHEMISTRY 6092/01 Paper 1 Multiple Choice 28 Aug 2024 1 hour Additional Materials: Multiple-Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your candidate name, class and index number in the spaces at the top of this page and also on the Answer Sheet in the spaces provided. Do not open this booklet until you are told to do so. 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 19. The use of an approved scientific calculator is expected, where appropriate. This question paper consists of 19 printed pages and 1 blank page. Setter: Mdm Fatimah Parent's Signature:__________________

2 1 A student measures the time taken for 1.0 g of magnesium to dissolve in 25.0 cm3 of dilute hydrochloric acid. A stopwatch and electronic balance are provided in the set-up. What additional apparatus is essential to complete the experiment? 1 measuring cylinder 2 pipette 3 gas syringe A 1 only B 2 only C 1 and 2 D 1 and 3 2 A mixture is made up of two liquids whose boiling points differ by 52.5 °C. What other information about the liquids is necessary to identify the appropriate method to separate them? A their colours B their densities C their melting points D their miscibility 3 The graph shows the melting points of mixtures of substance X and substance Y in different compositions. Which of the following observations about the mixture is/are correct? A A mixture of X and Y will always have a melting point below that of pure X. B A mixture of X and Y will always have a melting point below that of pure Y. C A mixture of X and Y will always have a melting point between that of both X and Y. D A mixture of X and Y in a 1:1 ratio has the lowest melting point.

3 4 The table shows some mixtures and their constituents obtained using suitable separation techniques. mixture constituent obtained 1 aqueous sodium chloride water 2 solid iodine and solid nickel solid iodine 3 aqueous sodium chloride solid sodium chloride Which row gives the correct separation techniques to obtain the constituents from the mixture? 1 2 3 A distillation sublimation evaporation B distillation sublimation filtration C filtration crystallisation evaporation D sublimation crystallisation filtration

4 5 A student carried out an experiment using the set-up shown below to separate a mixture containing four alcohols. The table gives the boiling points of the four alcohols used. alcohol boiling point/ °C butanol 117 ethanol 79 pentanol 138 propanol 97 Despite repeated attempts, the student only managed to obtain two alcohols from the mixture. Which alcohols did he fail to obtain? A butanol and ethanol B butanol and pentanol C ethanol and propanol D pentanol and propanol 6 The rate of diffusion of nitrogen and ammonia gases were compared at 50 °C and 25 °C. Which would have the slowest rate of diffusion? A ammonia gas at 25 oC. B ammonia gas at 50 oC. C nitrogen gas at 25 oC. D nitrogen gas at 50 oC.

5 7 Three particles and their nuclide notations are shown. particle 1 2 3 nuclide notation X Y Z Which of the following statements is correct about the particles? A Particle 1 and 2 have the same number of neutrons. B Particle 1 and 3 have the same number of electrons. C Particle 1 has more electrons than particle 3. D Particle 2 has fewer neutrons than particle 3. 8 Solid P conducts electricity and has a high melting point. When solid P is warmed with excess dilute hydrochloric acid, it partially dissolves leaving behind a residue. What is P? A brass B copper(II) oxide C graphite D iron 9 Compound G contains two elements, metal R and non-metal Q. G consists of a lattice of positive ions and negative ions. Each positive ion is surrounded by four negative ions and each negative ion is surround by eight positive ions. Which ions are present in, and what is the formula of, compound G? ions present formula A R+ Q2– R2Q B R2+ Q– RQ2 C Q+ R2– Q2R D Q2+ R– QR2 19 39 40 19 + 16 34 2 –

6 10 Graphene has a similar structure to graphite. However, it has one hydrogen attached to each carbon as shown. Which set of properties does graphene have? 1 it conducts electricity in the solid state 2 it has a giant molecular structure 3 it is soft A 1 and 2 B 1 and 3 C 2 and 3 D 1, 2 and 3 11 The outer shell electrons in a molecule, YZ2, are shown. Using the Periodic Table, how many protons can be found in atom Y? A 6 B 8 C 12 D 18 12 The complex ion [Co(NH3)x]3+ consists of 36.6 % by mass of cobalt, Co. [Ar : Co, 59; N, 14; H, 1] What is the value of x? A 3 B 5 C 6 D 8

7 13 What contains the largest number of particles? A 2 g of hydrogen molecules B 4 g of neon atoms C 8 g of oxygen molecules D 22 g of carbon dioxide molecules 14 Hydrogen gas reacts with chlorine gas to form hydrogen chloride gas. H2(g) + Cl2(g)  2HCl(g) What is the final volume of the gas mixture when 20 dm3 of hydrogen is reacted with 30 dm3 of chlorine gas at 100 C? A 40 dm3 B 50 dm3 C 60 dm3 D 70 dm3 15 On heating, ammonium nitrate, NH4NO3, decomposes to form dinitrogen oxide and water. NH4NO3 → N2O + 2H2O When 80 g of an impure sample of ammonium nitrate is heated, 27 g of water are formed. What is the mass of ammonium nitrate in the impure sample? [Ar: H, 1; O, 16; N, 14] A 20.0 g B 49.5 g C 60.0 g D 120 g 16 Ammonia and excess carbon dioxide can react to form urea and water in a reaction. 2NH3 + CO2 → CON2H4 + H2O The percentage yield of this reaction is 80 %. What mass of ammonia required for this reaction to obtain 60.0 g of urea? [Mr: NH3, 17; CO2, 44; CON2H4, 60; H2O, 18] A 10.6 g B 27.2 g C 34.0 g D 42.5 g

8 17 An aqueous solution of sul