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KimiaKertas 1Mac20121¼ jam

KOLEJ TUN DATU TUANKU HAJI BUJANG______________________________________________

UJIAN DIAGNOSTIK

SIJIL PELAJARAN MALAYSIA 2012

KIMIA

Kertas 1

Satu jam lima belas minit

JANGAN BUKA KERTAS SOALAN INI HINGGA DIBERITAHU

1. Kertas soalan ini mengandungi 50 soalan.2. Jawab semua soalan3. Jawab dengan menghitamkan ruangan yang betul pada kertas jawapan4. Bagi setiap soalan hitamkan satu ruangan sahaja5. Sekiranya anda hendak menukar jawapan, padamkan tanda yang telah dibuat.

Kemudian hitamkan jawapan yang baru.6. Rajah yang mengiringi soalan tidak dilukiskan mengikut skala.7. Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh

diprogramkan.

Kertas soalan ini mengandungi 23 halaman bercetak

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INFORMATION FOR CANDIDATES

1 This question paper consists of 50 questions.

2 Answer all questions.

3 Answer each question by blackening the correct space on the answer sheet.

4 Blacken only one space for each question.

5 If you wish to change your answer, erase the blackened mark that you have made. Then blacken the space for the new answer.

6 The diagrams in the questions provided are not drawn to scale unless stated.

7 You may use a non-programmable scientific calculator.

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1. Which of the following statements is true about the scientific method?A. Hypothesis is the possible explaination about the observationB. Inference is a conclusion which may be true or falseC. Two variables are manipulated in an investigationD. Constant variables affect the responding variables

2. When a molten naphthalene is cooled to the temperature lower than its melting pointA. the force between molecules become strongerB. the distance between the molecule decreasesC. the molecules have more energy and move randomlyD. the molecules in molten state is heavier than in solid state

3. Diagram 1 shows an atomic structure.

Diagram 1The particles labeled with X was discovered byA. Ernest RutherfordB. John DaltonC. J.J ThomsonD. James Chadwick

4. The equation below represents the reaction between iron ore, magnetite with hydrogen gas.Fe3O4 (s) + xH2 (g) yFe (s) + zH2O (l)

Find the sum of x, y and z that balances the equation.A. 5B. 7C. 8D.11

5. Why argon does not react with oxygen at room temperature?A. It is an inert gasB. It has 10 electrons in the moleculeC. It has two occupied electron shellsD. It has 8 valence electrons in the outermost shell

6. The chemical formula of a copper(II) sulphate crystals is CuSO4. 5H2O. What is the relative molecular mass?[ Relative atomic mass : Cu,64 ; S,32 ; O,16; H,1 ]A. 160B. 178C. 186

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D. 250

7. 2.03 g of element X reacts with 0.8 g of element Y. What is the empirical formula of the compound formed between X and Y? [ Relative atomic mass : X, 27 ; Y, 16]A. X2Y3

B. XY2

C. X3Y4

D. X4Y3

8. When going across a period in the Periodic Table of Elements, the elements show increasing inI proton numberII nucleon numberIII metallic propertiesIV number of valence electronsA. I and II onlyB. II and III onlyC. I, II and III onlyD. I, II and IV only

9. Which of the following shows correct match of colour for Cr3+, Cu2+ and Mn2+ ions respectively?

Cr3+ Cu2+ Mn2+

A Yellow Blue PinkB Orange Green BlueC Green Blue PinkD Blue Red Purple

10. Diagram 2 shows the set-up of apparatus to study the conductivity of electricity by different solutions.

Diagram 2A. Ammonia in benzeneB. Hydrogen chloride in waterC. Lead (II) chloride in ethanolD. Ethanol in benzene

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11. A 0.5 mol dm-3 of silver nitrate aqueous solution is electrolysed using silver electrodes. Which of the following half-equations represents the reaction that occurred at the anode?A. 4OH- O2 + 2H2O + 2e-

B. 2H+ + 2e- H2

C. Ag+ + e- AgD. Ag Ag+ + e-

12. Diagram 3 shows the stages involved in manufacturing sulphuric acid.

Diagram 3

Vanadium(V) oxide is used to speed up the rate of reaction at stageA. IB. IIC. IIID. IV

13. Which of the following substances is a synthetic polymer?A. StarchB. ProteinC. GlycogenD. Perspex

14. Diagram 4 shows the set-up of apparatus to prepare copper(II) sulphate crystals.

Diagram 4Which of the following is the correct sequences to obtain the crystals of copper(II) sulphate after this step?A. Heating Evaporation Filtration Cooling Drying B. Filtration Evaporation Cooling Filtration Drying C. Heating Filtration Evaporation Drying Cooling D. Cooling Evaporation Heating Filtration Drying

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15. Diagram 5 shows the symbol of element Q.

x

Qy

Diagram 5Atom Q has 4 protons and 5 neutrons. What is x and y ?

x yA 4 5B 5 4C 9 4D 13 4

16. Below is the molecular formula of a fertilizer.

What is the percentage of nitrogen in this fertilizer?A. 11.7 %B. 23.4 %C. 35.0 %D. 46.7 %

17. During electrolysis of aqueous X chloride solution with carbon electrodes, hydrogen gas is produced at the cathode. What conclusion can be made about X ?[ The letter X is not actual symbol of the element ]A. X ion is placed higher than H+ ion in Electrochemical SeriesB. H+ ions is more reactive than ions of XC. X is very soluble in waterD. X has higher boiling points

18. A few drops of phenolphthalein are added into sulphuric acid and pure water respectively. Which of the following observation is true ?

Sulphuric acid Pure waterA Red PurpleB Colourless Pale pinkC Blue GreenD Pale pink Purple

19. Which of the following is not a carbon compound?A. Natural rubberB. KeroseneC. WoolD. Silicate

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CO(NH2)2

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20. Which of the following are considered as a class of ceramics ?I PorcelainII CalciteIII DuraluminIV PyrexA. I and IIB. I and IIIC. II and IVD. III and IV

21. Atom of an ion P+ is placed in Group 1 and Period 3 with proton number 11. Which of the following shows the correct electron arrangement of an ion P?A.

B.

C.

D.

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22. Salt Y is a green coloured salt. When heated, it decomposes to release a colourless gas that turns acidified potassium manganate(VII) solution from purple to colourless. A brown residue is left. What is salt Y ?A. Copper (II) carbonateB. Lead (II) nitrateC. Iron (II) sulphateD. Iron (II) nitrate

23. Diagram 6 shows an electrolytic cell. The bulb lights up when the switch is turned on.

Diagram 6Which of the following is incorrect?A. X has high melting pointB. X could be molten lead (II) bromideC. X is soluble in water but insoluble in organic solventsD. X could be naphthalene

24. Diagram 7 shows a list of elements.

23 39 131 84 Na K Xe Kr

11 19 54 36Diagram 7

Which of the following statements are true about the elements?I Sodium and potassium exhibits the same chemical propertiesII Xenon and krypton have the octet arrangementIII Krypton is a very reactive gasIV Potassium has 9 valence electronsA. I and IIB. I and IIIC. II and IV D. III and IV

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25. An element Q combines chemically with chlorine to produce a compound QCl2 with ionic bond. Which of the following is true about Q?A. Has electron arrangement of 2.8.8.1B. Receives electrons to form anionC. Has 2 valence electronsD. Cannot conduct electricity in solid and molten form

26. Which of the following ions are present in aqueous potassium chloride?A. K+ and Cl- ionsB. H+ and OH- ionsC. K+, Cl- and OH- ionsD. K+, H+, OH- and Cl- ions

27. A compound has a molecular weight of 44. This compound may beI C3H8

II NaOHIII CO2

IV KOHA. I and IIB. I and IIIC. II and IVD. III and IV

28. Table 1 shows the reading on voltmeter of a Galvanic cell when tested with different metallic pairs.

Metallic pairs Negative terminal Positive terminal VoltageMg / Cu Magnesium Copper 2.7Sn / Cu Tin Copper 0.8Al / Cu Aluminium Copper X

Table 1What is the value for X ?A. 0.3B. 0.4C. 2.8D. 1.9

29. Table 2 shows the result of an experiment.

Metallic pairs Negative terminal Positive terminal VoltageMg / Cu Magnesium Copper 2.7Ag / Cu 1.1

Table 2 For metallic pair Ag /Cu, which will be the negative terminal and positive terminal?

Negative terminal Positive terminalA Copper Silver

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B Silver CopperC Hydrogen CopperD Hydrogen Silver

30. The following equation shows the reaction between P with chlorine.

Molecular formula of P isA. C3H6

B. C4H8

C. C4H10

D. C5H10

31. In two separate experiments, calcium carbonate powder and chips completely react with excess hydrochloric acid. Which of the following graphs shows the relationship between the volume of carbon dioxide gas released against time?

A.

B.

C.

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32. Which of the following half equations shows the reaction at the anode when dilute hydrochloric acid is being electrolysed ?A. 2Cl- (aq) Cl2 (g) + 2e-

B. 2H+ (aq) + 2e- H2(g)C. 4OH-(aq) 2H2O(l) + O2 (g) + 4e-

D. 2O2-(aq) O2(g) + 4e-

33. 7.45g of potassium chloride dissolves in water to produce a solution of 0.5 mole dm-3. What is the volume of potassium chloride solution?[Relative atomic mass : K, 39; Cl; 35.5]A. 50 cm3

B. 75cm3

C. 100cm3

D. 200cm3

34. Diagram 7 shows the electron arrangement of an atom of element Y.

Diagram 7 What is the proton number of the atom of element Y?A. 1B. 8C. 9D. 11

35. Isotopes has many applications in our daily life. Which of the following are true about the uses of isotopes?I Gamma rays of cobalt-60 are used to kill bacteria in foodII Isotope sodium-24 is used to detect leakage of underground pipesIII Plutonium-238 is used to sterilize medical instrumentsIV Beta rays from isotopes strontium-90 can trace tumoursA. I and IIB. I and IIIC. II and IVD. III and IV

36. A sample of carbon dioxide is cooled. Which of the following is true about the frequency of collision and the kinetic energy of its particles?

Frequency of collision Kinetic energyA Remains constant DecreasesB Decreases Increases

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C Increases Remain constantD Decreases Decreases

37. In an experiment to determine the rate of reaction, 25cm3 of 1.0 moldm-3 hydrochloric acid is added to 25 cm3 of 1.0 mol dm-3 sodium thiosulphate solution in a conical flask placed on top of a piece of white paper with a cross mark. Which of the following techniques is the most suitable to determine the rate of reaction?A. Record the time taken for the reaction to stopB. Record the time taken for the cross mark to disappearC. Record the time taken as soon as the maximum amount of precipitate is formedD. record the time as soon as no more gas bubble are formed

38. Which of the following statements explains the characteristics of catalysts properly?I Catalysts increase the rate of reactionII Catalysts increase the products of reactionIII The mass of catalysts does not change after a reactionIV The effect of catalysts depends on the mass usedA. I and IIB. I and IIIC. II and IVD. III and IV

39. Table 3 shows the volume of carbon dioxide released when excess calcium carbonate is added to hydrochloric acid at one minute intervals.

Time (minutes) 0 1 2 3 4Volume of gas(cm3)

0 7.0 12.0 17.0 21.0

Table 3What is the average rate of reaction at the 4th minute?A. 4 cm3 min-1

B. 5.25 cm3 min-1

C. 9 cm3 min-1

D. 12cm3 min-1

40. Diagram 8 shows the observation of a study of the conversion of states of a substances

Diagram 8

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Why is Z is observed in the study?A. Cooling of the liquid below freezing point but remains in liquid stateB. during cooling, particles lose energy and causes temperature dropC. Intermolecular forces between particles are very strong D. Particles have very high energy

41. What is the IUPAC name for this compound?

A. 2,2,4,4-tetramethylpentaneB. 2,2,4-trimethylpentaneC. 2,4-trimethylpentaneD.2-methyl-4,4-dimethylpentane

42. Which of the following hydrocarbon is an unsaturated hydrocarbon?A.

B.

C.

D.

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43. X is an element that has the following properties; Soft solid Reacts with cold water to form alkaline solution Store in paraffin oil

Among elements A, B, C and D in the Periodic Table of elements, which element represent X? ans: A

44. Which of the following statements are true for both ethene and ethane?I Produces carbon dioxide and water when burned in air

II Produces polymer through polymerization III Obtained from the fractional distillation of petroleum IV Decolourises the brown coloured of bromine water.

A. I and II only B. I and III only C. I, III and IV only D. II, III and IV only

45. Which of the following factors can decrease the number of reactant particles per unit volume?

A. Adding suitable catalyst B. A decrease in the concentration of reactants C. A decrease in the temperature of reactants D. A decrease in the total surface area of reactants.

46. Which of the following pairs are correct for the alloy and its main composition?

A. I and II onlyB. I and IV onlyC. I, III and IV onlyD. I, II, III and IV

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Alloy Main CompositionI Brass CopperII Pewter NickelIII Bronze ZincIV Duralumin Aluminium

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47. Chemical equation shows the reaction between zinc and sulphuric acid.

Which of the following factors increases the rate of reaction?A. Increases of volume of sulphuric acidB. Use of lower concentration of sulphuric acidC. Addition of small amount of copper(II) sulphateD. Use bigger size of zinc

48. The chemical equation shows the burning process of ethane in excess air.

What is the maximum volume of carbon dioxide gas evolved when 0.5 mole of ethene burns completely.[1 mole of gas occupied 24dm3 at room temperature and pressure]

A. 12 dm3

B. 24dm3

C. 36dm3

D. 48dm3

49. Which of the following processes, proved the kinetic theory of matter?A. DiffusionB. PhotosynthesisC. RespirationD. Neutralization

50. Diagram 8 shows the formation of ammonia through Haber Process.

Which of the following represent catalyst X, temperature Y and pressure Z?

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H2SO4(aq) + Zn(s) ZnSO4(aq) + H2(g)

C2H4(g) + 3O2 2CO2(g) + 2H2O(l)

Hydrogen Nitrogen

Ammonia

Catalyst XTemperature YPressure Z

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Catalyst X Temperature Y, oC Pressure Z / atmA Vanadium(V) oxide 550 200B Platinum 450 100C Iron 200 450D Iron 450 200

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