- 1 - 霹 雳 怡 保 培 南 独 立 中 学 SM POI LAM (SUWA) IPOH FINAL EXAMINATION 2021 CHEMISTRY PAPER 1 MULTIPLE-CHOICE QUESTIONS __________________________ Date : 15 November 2021 Time : 0805 – 0905 ( 1 Hour ) __________________________ Name :___________________________ Student ID :____________________ Class: S3LI ___________________________________________________________________________ INSTRUCTIONS TO CANDIDATES 1. This subject comprises two papers： Paper 1 : Multiple-choice Questions（30%）， Paper 2 : Subjective Questions（70%）. 2. Complete Paper 1 within the 1 hour allocated. 3. Attempt all the 30 questions in Paper 1. For each question, select the correct or the best answer and blacken the square corresponding to the same letter of the alphabet as the answer you have selected. Mark the answers with a 5B pencil on the answer sheet ‘O’ . 4. The prescribed electronic calculators may be used. 5. Periodic Table Sheet is on page 7. __________________________________________________________________________________________ This paper consists of 7 printed pages. Prepared by : Checked by : LIM KW ONG ....................................... ............................................. ( Lim Yoon Foo) ( Ong Kar Weng ) Do Not Turn Over This Page Until You Are Told To Do So
- 2 - Attempt all the 30 questions. 1. Which of the following reagents will react with phenol but not with cyclohexanol ? A P5 B CH₃COCl C CH₃COOH D 2 (aq) 2. Ethanol can be differentiated from other primary alcohols by using A phosphorus pentachloride B acidified potassium manganate (VII) C 2,4-dinitrophenylhydrazine D alkaline iodine 3. What is the expected observation when phenol is added to freshly prepared aqueous iron (III) chloride ? A A yellow precipitate B A violet-blue solution C White fumes of hydrogen chloride D A reddish-brown solution 4. Ethanol is warmed gently with an acidified solution of potassium manganate (VII). Which statement is true of the reaction that occurs ? A Potassium manganate (VII) acts as a reducing agent B The colour of potassium manganate (VII) changes from purple to green C Ethanoic acid is formed D Effervescene occurs 5. Ethanal can be distinguished from other aldehydes by using A phosphorus pentachloride B alkaline iodine C Tollens’ reagent D 2,4-dinitrophenylhydrazine 6. Compound X gives a silver mirror test when warmed with Tollens’ reagent and a yellow precipitate with alkaline iodine. X could be I ethanol II ethanal III propanone A I B II C III D I and II 7. Which of the following statements is correct regarding glucose ? A It is a ketose B It does not reduce Fehling’s solution C It has the same molecular formula as starch D It is a monosaccharide
- 3 - 8. Which of the following statements is not correct regarding benzaldehyde ? A It decolourises acidified potassium manganate (VII) B It reacts with Fehling’s solution to give an orange-brown solid C It gives a reddish-brown solid with 2,4-dinitrophenylhydrazine D It gives a ‘silver mirror’ with Tollens’ reagent 9. Esterification between an acid and an alcohol is an example of A nucleophilic substitution B electrophilic substitution C nucleophilic addition D electrophilic addition 10. Which of the following is expected to have the highest boiling point ? A CH₃COOH B CH₃CH₂COOH C CH₃CH₂CH₂COOH D CH₃CH₂CH₂CH₂CH₂OH 11. Which reagent will react with benzoic acid to produce benzoyl chloride ? A Concentrated hydrochloric acid B Chlorine in the present of ultraviolet light C Thionyl chloride D Chlorine in the present of anhydrous aluminium chloride 12. Which of the following combination is not correct ? A Benzene is insoluble in water B Benzene is a non-electrolyte C Benzene does not decolourise bromine in tetrachloromethane D Benzene burn with a smoky flame 13. Which statements is not correct ? A Benzoic acid is insoluble in cold water but soluble in hot water B Fatty acids are long-chain carboxylic acids C Methanoic acid gives a yellow precipitate with 2,4-dinitrophenylhydrazine D Oxalic acid reacts with excess concentrated sulphuric acid without leaving any solid residue
- 4 - 14. Which of the following does not react with lithium aluminium hydride ? A Propanamine B Propanal C Propanenitrile D Propyl ethanoate 15. Which reaction does not produce carboxylic acid ? A Ethylmagnesium iodide and propanone B Oxidation of toulene C Boiling propanenitrile with dilute sulphuric acid D Boiling ethylethanoate with dilute hydrochloric acid 16. Which of the following is not true during saponification ? A The product is the sodium salt of long-chain carboxylic acids B Hot, dilute sulphuric acid is used C Sodium chloride is added in the final stage D One of the raw materials is fat or oil 17. Which reagent does not react with ehanamide ? A NaOH B HNO₂ C CH₃COCl D 2,4-dinitrophenylhydrazine 18. Which of the following compounds react most vigorously with water ? A C₆H₅COOH + C₆H₅OH B C₆H₅COOH + C₆H₅ONa C C₆H₅COCl + C₆H₅OH D C₆H₅COCl + C₆H₅ONa 19. Which reagent does not react with benzamide, C₆H₅CNH₂ ? A Nitrous acid B Phosphorus (V) chloride C Sodium hydroxide D Chlorine in the present of aluminium chloride 20. Which of the following compounds will react with aqueous sodium carbonate to release carbon dioxide ? I C₆H₅COOH II C₆H₅COCl III C₆H₅COOC₂H₅ A I B II C I and II D I, II and III
- 5 - 21. Which of the following would be produced when the compound, C₆H₅COOCH₂CH₂CH₃ is treated with lithium aluminium hydride, LiAlH₄, in ether ? A C₆H₅CH₂OH and CH₃CH₂CH₂OH B C₆H₅OH and CH₃CH₂CH₂CH₂OH C C₆H₅COOH and CH₃CH₂CH₂OH D C₆H₅CH₂OH and CH₃CH(OH)CH₃ 22. Which of the following monomers has the same empirical formula as its polymer ? A Nylon-6,6 B Terylene C Polyamide D Polyphenylethene 23. A thermosetting plastic is a polymer having the following property A Its melting point is below 0°C B It can be softened on heat and hardened on cooling, and the process can be repeated C It is chemically inert and non-biodegradable D Once hardened, it cannot be softened by heat 24. Polymerisation of propene produces three different types poly(propene). One of which is atactic poly(propene). What is atactic poly(propene). ? A All the CH₃ groups are on the same side of the polymer chain B The CH₃ groups are randomly arranged along the chain C The CH₃ groups have been replaced by other halogen atoms D The polymer chains can be vulcanised 25. Which of the following statements is not correct regarding natural rubber ? A It softens when heated and hardened on cooled B It can be formed by the polymerisation of isoprene C It is an elastomer D Vulcanised rubber is more elastic than natural rubber 26. What happen when a thermosetting polymer is heated ? A It becomes harder B The cross-links between the polymer chains break C It softens D It turns into a liquid 27. Which of the following is not a naturally occurring polymer ? A Carbohydrate B Protein C Terylene D Rubber
- 6 - 28. What is a copolymer ? A It is an addition polymer B It is a naturally occurring polymer C It is a polymer consisting of more than one type of monomer D It softens on heating and can be remoulded 29. Which of the following polymers are thermoplastic ? I Polystyrene II Nylon III Bakelite A I and II B I and III C II and III D I ,II and III 30. Which of the following is not true of Bakelite ? A It is a thermosetting plastic B It has a cross-linked structure C It softens on heating D It is a copolymer ++++++++++++++ END OF PAPER ++++++++++++++
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