stpm trials 2009 chemistry paper 1 kelantan

8/3/2019 STPM Trials 2009 Chemistry Paper 1 Kelantan

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962/1

JABATAN PELAJARAN KELANTANJALAN DOKTOR, 15000 KOTA BHARU.

TRIAL EXAMINATION2009CHEMISTRY (KIMIA)

SIJIL TINGGI PERSEKOLAHAN MALAYSIA(MALAYSJA HIGHER SCHOOL EDVCATlON)PAPER 1 (KERTAS 1)

MULTIPLE-CHOICE (ANEKA PiLlMAN)One hour Ind f o r t y ~ f i v e minutes (Satu jam empat pulvb tima min it)

Instructions to candidates :DO NOT OPEN THIS BOOKLET UNTIL YOU TOLD TO DO SO

There are fifty questions in this paper. For each question.low suggested answers aregiven. Choose one correct answer and indicale iJ on the mu/tiple-clwice answer sheetprovided.Read the instructions at, the multiple-choice answer sheet very carefully,Answer all questions. Marks will not be deaucledfor wrong answers.Arabln kepada c:aIOD :

JANGAN BUKA BUKU SOALAN INI SEHINGGA ANDA DmENARKANBERBUAT DEMIKlAN

Ada lima pulub soaJon do.lam kerlas in;, Bag; setiup soaian, empal cadanganjawapan diberikan. Pilih satu jawopan yang belul dan randolcan jawopan iIU padnhelaian jawapan aneka pilihan yang dibekalkan.Boca arahan pada helalan jawapan ontko pillluJ" ilU dengan reliti.Jawab semua soolan. Marlwh lidal olean dUolak lxlgijawapan yang salah.

This qUestiOD paper con,ists of 13 printed pages(Kertu loaran iai terdiri daripada 13 balaman Mrutak)


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CONFIDENTIAL -2 -SECTION A

Four suggested answers labelled A, 0, C and 0 are given/or each question. Choose onecorrect a 1. Glucose (C6HI206) is the most importanillutrient in the Living cell fo r generatingchcmjcal potential energy. How many grams ofcarbon are in 16.55 g of glucose?

[Relative Atomic Mass: C- 12; 0>


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CONFIDENTIAL - 3 -5. Use partiaJ orbital diagrams to describe bow mixing ofatomic orbitals on the

centntl .tom leads to lbe bybrid orbital of the methanol, CH,OHA. It i t It i t I

sp'Blt It It I

sp'C. It I t I

spO. It I t I t I t I t I

sp'd

6. Which of the following unil cell does not have all axis . t right angles?A. OrthorhombicB. MonoclinicC. CubicD. Tetragonal

7. In which or the following liquids the particles are held together by Van der W.. sforces?A. SilverB. Sodium chlorideC. WaterD. Silicone dioxide

96211 CONFIDENTIALTh.is question paper is CONFIDENTIAL until the examination is over.


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CONFIDENTIAL -4 -8. The distribution of the kinetic enelSJ ofSa_us molecules at 279 K and 289 K isrepresented by the Maxwell-Boltzman distribution curve below:

Numberofmolecules

279 K289K

Kinetic energy,

Which of the following best explains why the rate of reaction is double when thetemperature is increaserl from 279 K to 289 K?A. The total area under the curve increases two foldsB. The average velocity of the molecules increases two foldsC. 10e number of collision between the particles increases two foldsD. The number of molecules having energy greater or equal to the activation

enelgy, fa, increases by two folds9. The values for 7jnc and silver are given below;

Z r a " + 2e - Zn,AS" + e - AgIt can be concluded that

E' - -0.74 VE' - -H).80 V

A silver is a stronger oxidising agent than zincB 202" is a stronger reducing agent than Ag+C silver is the cathode in the electric cell formed from the combination of thetwo half-celJsD silver will reduce Zn 2+ to Zn

10. In the elcctrolysis of aqueous sodiwn chloride using a mercury cathode, the Na'" ioninstead of the H+ ion is discharged. This is because

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ABCD

mercury is a liquid at room conditionssodium is more reactive than hydrogensodium is above hydrogen in the electrochemical serieshydrogen has a high overvoltage at the mercury electrode

CONFIDENTIALl1tis question puper is CONFID ENTIAL until the examination is over.


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CONFIDENTIALII. Consider the balf-cells below:

Cu '" + e -+ Cueu1++ e _ Cu '"What is the E for the reaction :2Cu - Cu2" + CuA +0.36 VB -0.36 VC +0.68 Vo -0.68 V

12 . Consider the following half-cclls :Fel + e _ Fe lih + 2e -+ 2rSn4 t + 2c _ S04.Cc.l+ + 3e -+ Ce

It can be concluded that iodine willA reduce eel .. to CeB oxidise Ce to CeltC reduce Peh to FeZ+o reduce So4+ to Sn2-f.

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13 . The rate expression for 8 given reaction is:- d fAJ = k [A]

dl

E' - +0.52 VE' - +O.16 V

E' - +0.74 VE' - +0.55 VE'=+O.15 VE' = -2.33 V

Which of the following statements about the reaction is not correct?A It is the fttSt order reaction.B The half-life of the reaction is a constant.C The reaction could be a radioactive decay.D The rate of reaction is independent of the temperature

96211 CONFIDENTIALThis question paper is CONF1DENTIAL until the examinat'ion is over.


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II

CONFIDENTIAL -6-14. Consider the reaction:4NHJ (g) + 70, (g) 4No, (g) + 6H,O(I)

Which of the following species in the above reaction appears or disappears the fastest ?A NHJB NO,C 0,D H,O

15. The table below gives the data for the reaction :~ m c n t {19 1moldm-oT r n1rnoldm-oT Relative rateI I2 I3 I

A rate - k[XI ' [Y IB rate - k[ X IJY l 'C rate = k[XJD rate . k[ Y I'

0.0500.1000.100

16. An B7..eotropic mixture

I 0.040+ 0.0400.080

A contains the same quantity of each component in the mixture.B can only be separated by stearll distillationC maintains its composition when subjecu .d to fractional di st'illation

II4

o must have a higher boiling point than the boiling points of the respectivecomponents17 . What is meant by an ideal solution?A A solution which obeys Raoult's lawB A solution whose vapour shows ideal behaviourC A solution is fonned accompanied by release of heat energyD A solution where the total vapour pressure is equal to the sum of the partialvapour pressure of he individual liquids in the mixture18 . The pH of an aqueous so lution o f nitric (V) acid is 0.3. Calculate theWconcentration (in mol dm ol ) of the solution.A 0.3o 1.3C 1.7D 2.0

II

96211 CONFIDENTIALThis question paper is CONFlDENTIAL until the examination is over.


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CONFIDENTIAL 7

19. Kais better measure for the strengths ofweak acids as compared to pH becauseA its value is easier to measureB its value docs not depend on tempetatureC its vaJue does not depend on the concentration of the acido its value is a whole number20. Consider the following reaction:

' \X+Y " 2ZWhen 8 mixture consisting of 5.0 mol of X and 3.0 mol ofY is allowed to reachequilibrium. 2.0 mol ofZ is fonn. The for the reaction isA 0.125B 0.250C 0.267D 0.500

21. ' \2NO,(g) " N,O. (g) t l l I == negative valueWhich of the following factors is likely to increase the value ofKcfor the abovereaction ?A Addition of the cataJystB Decreasing temperatureC Adding more NO,D Increasing temperature

22. CH,CH,I __ tlw>_ _k_K ..NY isA CH,COONaB CH, CH,COONaC CH,CH,COOHD CH ,CH,CH,cOOH

x y

23. Which of the following alcohol gives 2-methylpropanoic acid when it is ox.idised?A IbutanolB 2 butanolC 2.methyllpropanolD 2methyl.2propanol

96211 CONFlDENTLALThis questioD paper is CONFIDENTIAL until the examination is over.


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CONFIDENTIAL -8-

24. Which of the following comoounds does not Rive a yellow DreciDitate with alkalineodin ?e.A EthanolB EthanaiC Methno81D Pheny lethanone25. II, (g) 2H (g)

BI'l (8) 2Br (g)H, (g) +Br, (g) 2fIBr(g)6 H +436 kJ6H= + 194 kJ6H= -104 kJ

Use the above data to determine Mi for the following reaction.!i(g) + Br(g) - HBr(g)

A -288 kJB -367 kJC +263 kJo +526 kJ26.The enthalpy data for sodium, bromine and sodium bromide are as follows:

EnthaJpy ofatomisation ofNa - +108 kJ mor lEnthalpy ofatomisation ofBr = +112 kJ mor lFirst ionisation energy ofNa = +496 kJ mor lEnthalpy of formation ofNaBr = -361 kJ mor', ~ . 4-"\ ,a.. - 3 ~ ....rWhat is the enthalpy change for the reaction?NaBr (5) No' (g) + Br (g)

A -331 kj molB -752kJmolC +33 1kJ molo +752 kJ rnol27 .Which of the following equations represent the standard enthalpy of atomisation foriodine?

A I , (g) - 2 1(g)B Y, I (g) - I(S)C y, I, (5) -I g)o 1(5) -1(g)

96211 CONFIDENTIALTh.is question paper is CONFIDENTIAL until the examination is over.


9/13

CONFIDENTIAL 9 28 . R is a second period element with a valence electronic configuration ofns1np",Which of the following is Dot a compound ofR?A. RF,B. Na,RC. RCI ,D. H,R29. Compared 10 barium, berylliumA. is 8 stronger reducing agentB. forms a more basic oxide.C. reacts more vigorousl y with water.D. fonns more covalent compoWKis .30. Which of the following stalements is true aboUI NoCI and NaI?A. NoI is less volatile than NoCI.B. r has a higher chargc density than cr.C. Nal is a stronger reducing agent than NaC!.D. NoCI and Nal arc both while solids.31. The following oxides are amphoteric esc.eptA. AhO ,B. PhO,C. SnOD. SiD,32. The following is true of nitric acid ucept

I 'd' F , . F :l


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CONFIDENTIAL - 10 -34. Which of the series of oxides shows increasing melting point?A. CI,O, Al,O,. SO,. Sio,.B. SO,. Al,O,. Sio, Cho,.C. SO,. CI,O,. Sio,. AI,O,.D. Sio,. Al,o,. Cho,. So,.35 \\ hieh o f tile' fnllo,",ing in n q \ l ~ o u s so lution of equa l COnCf'll lrnTioll


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CONFIDENTIAL - II -39 . Pheny lamine is a weaker bnse than ammonia becauseA ammonia is an ionic compOlmd while phenylamine is a covalent compoundB the lone pair electrons in phenylamine can be delocalized into the benzene ring.e ammonia is soluble in water while phenylamine is not.D the large phenyl group in phenylamine hinders the attacks by H,O'

40 . Which oflhe following statements is true of 21ass?A. It consists ofwell-ananged silicate Wlits.B. It withstands the aetion of strong alkaline.C. It softens at a wide range oftempetBlures.D. It can be coloured by arlding soda lirn


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CONFIDENTIAL - 12 -42. Which of the following statements is true ofelectrons occupying an atom?

1 Electrons occupy orbitals based on the Aufbau Principle.2 Each orbital can contain a maximum of two electrons.J The two electrons in an orbital have opposite spin

43. The quantity of substances produced during electrolysis depends onJ the magninlde oflhe current2 temperature3 the concentration of the aqueous ion

44. Which oflhe following solutions wilJ produce hydrogen gas when eJectrotysed usingplatinum electrodes ?1. dilute sodium hydroxide2. dilute sodium cbloride3. dilute hydrochloric acid

45. During the anodisation of aluminiumI. oxygen is liberated at the aluminium electrode2. the electrolyte used is an aqueous solution ofaJuminium sulphate3. aluminium is made the cathode

46. The following graph shows the energy profile for the reaction: P '; ! QEne rgy

E,

Which of the foUowioe. are true ?1 The activation of the reverse reaction is Ez2 The enthaJpy change of reaction is E1-

reaction pathway

3 Addition of a catalyst can aJler the value of E. llDd E::z

%211 CONFIDENTIAL*This question paper is CONFIDENTIAL Wlul the examination is over.


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CONFIDENTIAL - 13 -

47. The mte equation for the reaction: A + B - products, is

The value of k depends onI . catalyst2. the values ofx and y3. the concentration ofA and B

48. Which of the following compounds will react with ethanoyl chloride?I Water2 Phcnylamine3 Propanal

49 . Which of the following arc characteristic of the benzene molecule?I. It is planar2. It undergoes electrophilic substitution reaction3. All the carbon a10m undergoes Sp2 bybridisation

50. Which of the following molecules have polar bond but have no overal l dipoles ?

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I CI,2 C,H,3 'BeCl,

THE END OF QUESTION PAPER

CONFIDENTIAL

stpm trials 2009 chemistry paper 1 kelantan

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