Soalan Percubaan - 2007

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4541/1 Copyright reserved MARA [See next pageCONFIDENTIAL

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CONFIDENTIAL

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Chemistry

Paper 1

September

20071 hour

SPM TRIAL EXAMINATION 2007

MARA JUNIOR SCIENCE COLLEGE

CHEMISTRY

Paper 1

One hour and fifteen minutes

DO NOT OPEN THE QUESTION BOOK

UNTIL BEING TOLD TO DO SO.

1. The question booklet is bilingual.Kertas soalan ini adalah dalam dwibahasa.

2. Candidates are advised to read information for candidates on page 2.

Calon dikehendaki membaca maklumat untuk pelajar di halaman 2.

This question booklet has 27 printed pages


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INFORMATION FOR CANDIDATES

MAKLUMAT UNTUK CALON

1. This question paper consists of 50 questions.Kertas soalan ini mengandungi 50 soalan..

2. Answerall questions.Jawabsemua soalan.

3. Answer each question by blackening the correct space on the answer sheet.Jawab dengan menghitamkan ruangan yang betul pada kertas jawapan.

4. Blacken only one space for each question.Hitamkansatu ruangan sahaja bagi setiap soalan .

5. If you wish to change your answer, erase the blackened mark that you have made.

Then blacken the space for the new answer.Sekiranya anda hendak menukar jawapan, padamkan tanda yang telah dibuat. Kemudian hitamkan

jawapan yang baru.

6. The diagrams in the questions provided are not drawn to scale unless stated.Rajah yang mengiringi soalan tidak dilukiskan mengikut skala kecuali dinyatakan.

7. You may use a non-programmable scientific calculator.Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh deprogram.


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1 The nucleus of an atom containsNukleus sesuatu atom mengandungi

A electrons onlyelektron sahaja

B neutrons onlyneutron sahaja

C both protons and neutronsproton dan neutron

D both protons and electronsproton dan electron

2 Which statement is correct about noble gases?Manakah antara pernyataan berikut benar tentang gas adi?

A Exist as diatomic moleculesWujud sebagai molekul dwiatom

B Do not form chemical bondsTidak membentuk ikatan kimia

C Form ions with different valenciesMembentuk ion dengan berbagai valensi

D Combine with transition metals to form coloured compoundsBergabung dengan logam peralihan membentuk sebatian berwarna

3 Which of the following substances has electrostatic forces between its particles?Manakah antara bahan berikut mempunyai daya tarikan elektrostatik antara zarah?

A NaphthaleneNaftalena

B Carbon dioxideKarbon dioksida

C Hydrogen chlorideHidrogen klorida

D Magnesium oxideMagnesium oksida


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4 Acid rain causes the land to become acidic. Farmers neutralize the acidity in the soil

by adding Hujan asid menyebabkan tanah menjadi berasid. Petani meneutralkan keasidan tanah dengan

menambahkan

A limekapur

B sulphurSulfur

C zinc nitrate

zink nitrat

D ammonium sulphate

ammonium sulfat

5 Table 1 shows information about the ability of three substances to conduct electricity.Jadual1 menunjukkan maklumat tentang kebolehan tiga bahan untuk mengalirkan elektrik.

SubstanceBahan

P Q R

Electrical conductivity in solid state.Kekonduksian elektrik dalam keadaan pepejal

X X

Electrical conductivity in molten state.Kekonduksian elektrik dalam keadaan leburan

X

TABLE 1

Which of the following statements is true?Manakah antara pernyataan berikut benar?

A Solid and molten P contains free moving ions.Pepejal dan leburan P mengandungi ion-ion bergerak bebas.

B Solid and molten Q contain atomsPepejal dan leburan Q mengandungi atom.

C Molten R contains free moving ionsLeburan R mempunyai ion-ion bergerak bebas

D There are no ions in solid R.Tiada ion dalam pepejal R

6 Sodium hydroxide solution is added to hydrochloric acid in a beaker.

Which of the following ionic equations represents the reaction that occurs?Larutan natrium hidroksida dicampur dengan asid hidroklorik di dalam satu bikar.

Manakah antara persamaan ion berikut mewakili tindak balas yang berlaku?

A Na+ + Cl- NaCl

B H+ + OH - H2O

C Na+ + OH - NaOH

D H+ + Cl- HCl


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7 Which of the following salt is soluble in water?Manakah antara garam berikut larut dalam air?

A Iron(II) sulphate

Ferum(II) sulfat

B Silver chlorideArgentum klorida

C Calcium carbonateKalsium karbonat

D Lead(II) bromidePlumbum(II) bromida

8 Baking powder contains sodium hydrogen carbonate. It reacts with acidic substances

to releaseSerbuk penaik mengandungi natrium hidrogen karbonat. Ia bertindak balas dengan bahan berasiduntuk membebaskan

A hydrogenhidrogen

B nitrogennitrogen

C carbon dioxidekarbon dioksida

D nitrogen dioxidenitrogen dioksida

9 Diagram 1 shows steps in industrial preparation of sulphuric acid.Rajah 1 menunjukkan langkah penyediaan asid sulfurik secara industri.

DIAGRAM 1

Which of the following steps requires a catalyst?Manakah antara langkah berikut memerlukan mangkin?

A I

B II

C III

D IV

S SO2 SO3 H2S2O7 H2SO4 I II III IV


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10 Diagram 2 shows the arrangement of atoms in bronze.Rajah 2 menunjukkan susunan atom dalam gangsa.

DIAGRAM 2

What is atom X?Apakah atom X?

A AluminiumAluminium

B ZincZink

C TinStanum

D CarbonKarbon

11 Which of the following reactions occurs at the highest rate?Manakah antara tindak balas berikut berlaku pada kadar yang paling tinggi?

A PhotosynthesisFotosintesis

B Rusting of ironPengaratan besi

C Combustion of hydrogen in oxygenPembakaran hidrogen dalam oksigen

D Combustion of magnesium in oxygenPembakaran magnesium dalam oksigen


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12 Diagram 3 shows the apparatus set-up used to study the rate of reaction of calcium

carbonate and hydrochloric acid. Rajah 3 menunjukkan susunan radas untuk mengkaji kadar tindak balas antara kalsium karbonat

dengan asid hidroklorik.

DIAGRAM 3

The rate of the above reaction can be increased byKadar bagi tindak balas diatas boleh ditingkatkan dengan

A grinding the marble chipsmenumbuk halus kalsium karbonat

B lowering the temperature of hydrochloric acidmenurunkan suhu asid hidroklorik

C using a larger flask

menggunakan kelalang yang lebih besarD adding water to hydrochloric acid

menambahkan air ke dalam asid


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13 Diagram 4 represents the structural formula of a carbon compound.Rajah 4 mewakili formula struktur suatu sebatian karbon,.

DIAGRAM 4

Which of the following alcohol reacts with propanoic acid to produce the above

compound?Manakah antara alkohol berikut bertindak balas dengan asid propanoik untuk menghasilkan sebatian

di atas?

A B

C D

14 Unsaturated fats can be converted to saturated fats throughLemak tak tepu boleh ditukar kepada lemak tepu melalui

A hydrogenationpenghidrogenan

B esterification

pengesteran

C neutralizationpeneutralan

D fermentationpenapaian


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15 Diagram 5 represents the structural formula of but -1- ene.Rajah 5 menunjukkan formula struktur bagi but-1-ena.

DIAGRAM 5

Which of the following is the structural formula and name for an isomer of but-1-ene?Manakah antara formula struktur dan nama berikut betul bagi satu isomer but-1-ena?

A

But-3-ene

B

2-methylprop 1 ene

C

2-methylprop 2 - ene

D

2-methylprop 2 ene

16 Diagram 6 shows the chemical changes that occurs to compound G.Rajah 6 menunjukkan perubahan kimia yang berlaku ke atas sebatian G.

DIAGRAM 6

Which of the following is compound G?Manakah antara berikut adalah sebatian G?

A n- butanen-butana

B But - 1 eneBut-1-ena

C But - 2 eneBut-2-ena

D Butan - 2 - ol

Butan-2-ol

GAcidified KMnO4

KMnO4 berasid

H OH OH H

H - C - C - C - C - H

H H H H


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17 Reaction between ferum(II) sulphate solution and bromine can be represented by the

following equation.Tindak balas antara ferum(II) sulfat dengan bromin boleh diwakili oleh persamaan berikut.

Which of the following is true about the reaction?Manakah antara berikut adalah benar tentang tindak balas tersebut?

A Fe2+ is reducedFe2+ diturunkan

B Br2 is a reducing agentBr2 adalah agen penurunan

C Fe2+ is an oxidizing agentFe2+ adalah agen pengoksidaan

D Br2 accepts electronsBr2 menerima elektron

18 Which of the following is an oxidation process?Manakah antara berikut adalah proses pengoksidaan?

A Propene changes into propanePropena ditukar ke propana

B Lead(II) oxide loses its oxygenPlumbum(II) oksida kehilangan oksigen

C Magnesium atom forms magnesium ion.Atom magnesium membentuk ion magnesium.

D Chlorine molecule gains electrons.Molekul klorin menerima electron.

2 Fe2+ + Br2 2 Fe3+ + 2 Br-


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EnergyTenaga

19 Diagram 7 shows an energy level diagram for neutralisation process.Rajah 7 menunjukkan rajah aras tenaga bagi proses peneutralan.

DIAGRAM 7

Based on Diagram 7 , it can be concluded thatBerdasarkan Rajah 7 dapat disimpulkan bahawa

I the heat of neutralization is - 57 kJ mol-1haba peneutralan adalah - 57 kJ mol

-1

II 57 kJ of energy is needed for the reaction57kJ tenaga diperlukan untuk tindak balas ini.

III the products of reaction contain less energy than the reactantstenaga hasil tindak balas kurang dari tenaga bahan tindak balas

IV temperature drops when reaction takes place.suhu menurun semasa tindak balas berlaku.

A I and III only

B II and III only

C I and IV only

D II, III and IV only

20 Table 2 shows the types and functions of food additives.Jadual 2 menunjukkan jenis dan fungsi bahan tambah dalam makanan.

TypeJenis

FunctionFungsi

I PreservativePengawet

Prevents growth of microorganism in foodsMenghalang pembiakan mikroorganisma dalam makanan

II AntioxidantAntioksida

Prevents oxidation of the oil by oxygenMenghalang pengoksidaan minyak oleh oksigen

III FlavouringPerisa

Enhances the flavour of foodsMenambahkan rasa dalam makanan

IV ColouringPewarna

Gives and restores certain colour in foodsMemberi dan mengekalkan warna dalam makanan

TABLE 2

Which of the following are correctly matched?Antara pasangan berikut manakah benar?

A I and III only

B I, II and IV only

C II, III and IV onlyD I, II, III and IV

NaOH + HCl

NaCl + H2O

H = -57 kJ mol-1


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21 Substance T exists as a liquid at temperature of 120 o C.

Which of the following is the probable melting point and boiling point of substance

T?Bahan T wujud sebagai cecair pada suhu 120oC.

Manakah antara berikut mungkin takat lebur dan takat didih bahan T?

Melting point /o

CTakat lebur

Boiling point /oC

Takat didih

A

B

C

D

2

-41

140

75

62

21

190

130

22 Table 3 shows the number of protons for elements V, W, X, Y and Z.Jadual 3 menunjukkan bilangan proton bagi unsur-unsur V, W, X, Y dan Z.

Element

UnsurV W X Y Z

Number of protons

Bilangan proton3 8 10 11 20

TABLE 3

Which of the following elements have the same number of valence electrons?Manakah antara unsur-unsur berikut mempunyai elektron valens yang sama?

A V and Z

B W and X

C V and Y

D W and Z

23 Table 4 shows the proton number of elements P, Q, R and S.Jadual 4 menunjukkan nombor proton bagi unsur P, Q, R dan S.

ElementUnsur

P Q R S

Proton numberNombor proton

11 13 16 19

TABLE 4

The sequence of the elements in the order of increasing atomic size isSusunan unsur-unsur mengikut pertambahan saiz atom ialah

A S, R, Q, P

B R, Q, P, S

C P, Q, R, S

D S, P, Q, R


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24 Diagram 8 shows the apparatus set-up for the decomposition of calcium carbonate.Rajah 8 menunjukkan susunan radas bagi penguraian kalsium karbonat.

DIAGRAM 8

Which of the following equations represents the reaction that occurs in the test tube

containing lime water? Manakah antara persamaan berikut mewakili tindak balas yang berlaku dalam tabung uji

mengandungi air kapur?

A CaCO3 CaO + CO2

B Ca + 2 H2O Ca(OH)2 + H2

C Ca(OH)2 + CO2 CaCO3 + H2O

D Ca2+ + 2 OH- Ca(OH)2

25 Substance X has the following properties.Bahan X mempunyai sifat-sifat berikut.

Which of the following is substance X?Manakah antara berikut bahan X?

A Silicon dioxideSilikon dioksida

B Silver chlorideArgentum klorida

C MercuryMerkuri

D Zinc SulphateZink sulfat

High melting pointTakat lebur yang tinggi

Conducts electricity in the molten stateMengalirkan elektrik dalam keadaan leburan

Insoluble in waterTidak larut dalam air


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26 Element X reacts with carbon and sodium to form compounds as shown in Table 5.Unsur X bertindak balas dengan karbon dan natrium membentuk sebatian seperti yang ditunjukkan

dalam Jadual.5.

ReactionTindak balas

FormulaFormula

Element X and carbonUnsur X dan karbon

CX4

Element X and sodiumUnsur X dan natrium

NaX

TABLE 5

Which of the following represents the electron arrangement for a compound formed

between magnesium and element X?Manakah antara berikut mewakili susunan elektron bagi sebatian yang terbentuk antara magnesium

dan unsur X?

A

B

C

D


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27 Diagram 9 shows a chemical cell using a lead plate and a copper plate.Rajah 9 menunjukkan sel kimia menggunakan plat plumbum dan kuprum.

DIAGRAM 9

Which of the following is true for the chemical cell?

Manakah antara berikutbenar bagi sel kimia di atas?

A The copper plate acts as the positive terminal.Plat kuprum bertindak sebagai terminal positif.

B The salt bridge acts as a medium for transferring of electrons.Titian garam bertindak sebagai perantaraan untuk pemindahan electron..

C The electrons flow from copper plate to the lead plate through external circuit.Elektron mengalir dari plat kuprum ke plat plumbum melalui litar luar..

D The concentration of the Cu 2+ ions in the copper(II) sulphate solution remains

unchanged.

Kepekatan ion Cu2+

dalam larutan kuprum(II) sulfat tidak berubah.

28 Diagram 10 shows the steps taken to prepare a standard solution.Rajah 10 menunjukkan langkah-langkah untuk menyediakan larutan piawai.

Step P Step Q Step R Step S Langkah P Langkah Q Langkah R Langkah S

DIAGRAM 10

Arrange the steps in the correct order of preparing a standard solution.Susunkan langkah-langkah mengikut urutan yang betul.

A S, Q, R and P

B S, R, P,and Q

C Q, P, R and SD P, R, S and Q


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29 Diagram 11 shows the structure for two types of rubber.Rajah 11 menunjukkan struktur bagi dua jenis getah..

DIAGRAM 11

Based on Diagram 11, which of the following statements is true?Berdasarkan Rajah,11 manakah antara pernyataan berikut adalah benar?

A Rubber X is more elastic than rubber Y.Getah X lebih kenyal dari getah Y.

B Rubber X is harder than rubber Y.Getah X lebih keras dari getah Y.

C Rubber X is easily oxidised than rubber Y.Getah X lebih mudah teroksida dari getah Y.

D Rubber X has higher melting point than rubber Y.Getah X mempunyai takat lebur lebih tinggi dari getah Y.

30 In an experiment, 25 cm3

of 0.2 mol dm-3

hydrogen peroxide solution decomposes toproduce oxygen gas. Graph of volume of oxygen gas against time is sketched and

curve R is obtained as shown in Diagram 12.Dalam satu eksperimen , 25 cm3 larutan hidrogen peroksida 0.2 mol dm-3 terurai membebaskan gas

oksigen..Graf isipadu gas melawan masa diplotkan dan lengkung R diperolehi seperti ditunjukkan di

Rajah 12.

DIAGRAM 12

Which of the following solution will produce curve S?Manakah antara larutan berikut menghasilkan lengkung S?

A 20 cm3 of 0.10 mol dm-3 hydrogen peroxide

B 30 cm3 of 0.20 mol dm-3 hydrogen peroxide

C 20 cm3 of 0.30 mol dm-3 hydrogen peroxide

D 10 cm3 of 0.30 mol dm-3 hydrogen peroxide

Rubber YRubber X

R

S

Volume of oxygen /cm3

Isipadu oksigen

Time / s

Masa


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Combustion

Process II

CO2 + H2O

CH3COOH

Pembakaran

Proses II

31 Diagram 13 shows the conversion of molecule A through two different processes.Rajah 13 menunjukkan penukaran molekul A melalui dua proses berlainan..

DIAGRAM 13

Which of the following is molecule A and process IIManakah antara berikut merupakan molekul A dan proses II ?

Molecule A Process II Molekul A Proses II

A Ethanol Esterification Etanol Pengesteran

B Ethanol Oxidation Etanol Pengoksidaan

C Ethene Dehydration Etena Pendehidratan

D Ethanoic acid Esterification Asid etanoik Pengesteran

32 Diagram 14 shows the set-up of apparatus to study factors affecting corrosion of iron.

Rajah 14 menunjukkan susunan radas untuk mengkaji faktor mempengaruhi kakisan besi.

DIAGRAM 14

In which of the following test tube will the iron nail rust?Manakah antara tabung uji berikut akan berlakunya pengaratan paku besi?

A X onlyX sahaja

B Y onlyY sahaja

C X and Z onlyX dan Z sahaja

D Y and Z onlyY dan Z sahaja

Molecule A

Molekul A


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33 The following equation represents the preparation of detergent.Persamaan berikut mewakili penyediaan detergen.

What is the pH value for solution X?Apakah nilai pH bagi larutan X?

A 2

B 7

C 9

D 14

34 Diagram 15 shows the set-up of apparatus to determine heat of combustion of ethanol.Rajah 15 menunjukkan susunan radas untuk menentukan haba pembakaran etanol.

DIAGRAM 15

The heat of combustion of ethanol was found less than the theoretical value. What can

be done to improve the experimental value? Haba pembakaran etanol didapati kurang dari nilai teori. Apa yang perlu dilakukan untuk

memperbaiki nilai eksperimen tersebut?

I Remove the wooden blockKeluarkan blok kayu

II Use copper container to replace beaker

Gunakan bekas kuprum menggantikan bikar

III Do not use wire gauze when heatingTidak menggunakan kasa dawai semasa pemanasan

IV Use greater volume of waterMenggunakan isipadu air yang lebih besar

A II and III only

B I, II and III only

C II, III and IV only

D I, II, III and IV


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35 Reaction between Fe2+ ions and MnO4- ions is represented by the following equation.

Tindak balas antara ion Fe2+

dan ion MnO4-

diwakili oleh persamaan berikut:

5Fe2+ + MnO4- + 8H+ 5Fe3+ + Mn2+ + 4H2O

Which of the following information could be obtained from the equation?Manakah antara maklumat berikut dapat diperoleh dari persamaan di atas?

I The oxidation number of manganese changes from +7 into +2Nombor pengoksidaan mangan berubah dari +7 ke +2

II The oxidation number of hydrogen changes from +1 into 0Nombor pengoksidaan hidrogen berubah dari +1ke 0

III The green colour of Fe2+ ions solution turn to brownLarutan hijau ion Fe

2+bertukar kepada larutan perang

IV Electrons transfer from Fe2+ ions into MnO4- ions solution

Elektron berpindah dari ion Fe2+

kepada ion MnO4-

A I and III only

B II and IV only

C I, II and III only

D I, III and IV only

36 Table 6 shows the number of neutrons, protons and electrons of particles R and S.

Jadual 6 menunjukkan bilangan neutron , proton dan elektron bagi zarah R dan S.

ParticleZarah

Number of

neutronsBilangan neutron

Number of

protonBilangan proton

Number of

electronsBilangan elektron

R 12 11 11

S 12 12 10

TABLE 6

Which of the following is true about R and S?Manakah antara berikut benar tentang R dan S?

A R and S are ionsR dan S adalah ion

B R and S are isotopesR dan S adalah isotop

C R has one valence electronR mempunyai satu elektron valens

D S has gained two electronsS menerima dua elektron


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37 Metal M forms a chloride compound with the formula MCl3. Given the formula of

chromate (IV) ions is CrO42-, then the formula of M chromate is

Logam M membentuk sebatian klorida yang mempunyai formula MCl3. Diberi formula bagi ion

kromat(IV) adalah CrO4-2, maka formula bagi sebatian M kromat ialah

A MCrO4

B M2CrO4

C M(CrO4)3

D M2(CrO4)3

38 The equation represents the displacement of copper from aqueous copper (II) sulphate

using metal Q.Persamaan berikut mewakili penyesaran kuprum daripada larutan kuprum(II) sulfat menggunakan

logam Q.

Q + CuSO4 QSO4 + Cu

What is the volume of aqueous 1 mol dm-3 of copper (II) sulphate that reacts

completely with 0.96 g of metal Q?

[Relative atomic mass Q: 24]Apakah isipadu larutan kuprum(II) sulfat 1 mol dm

-3bertindak balas lengkap dengan 0.96 g logam Q?

[Jisim atom relatif Q : 24]

A 60 cm3

B 40

cm3

C 25 cm3

D 23 cm3

39 Ammonium sulphate, (NH4)2SO4 is a fertilizer.

What is the percentage of nitrogen in a molecule of the compound?

(Relative atomic mass : H, 1; N, 14; O, 16 ; S, 32)Ammonium sulfat, (NH4)2SO4 adalah sejenis baja.

Berapakah peratus nitrogen per molekul dalam sebatian?

(jisim atom relatif : H, 1; N, 14; O, 16 ; S, 32)

A 23.7%

B 21.9 %

C 21.2 %

D 10.6 %


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40 Element X is placed on the right of element Y in the same Period of the Periodic

Table. If the proton number of Y is 12, then the electron arrangement of X is

Unsur X berada di kanan unsur Y pada kala yang sama dalam Jadual Berkala.Unsur.Jika nombor proton Y adalah 12, maka susunan elektron bagi unsur X ialah

A 2.8.2

B 2.8.6

C 2.8.8.2

D 2.8.8.6

41 Table 7 shows the proton number of element X and Y.Jadual7 menunjukkan nombor proton bagi unsur X dan Y.

Atom Proton number

X 12

Y 17

TABLE 7

Which of the following is true for compound formed between X and Y?Manakah antara berikut benar bagi sebatian yang terbentuk antara X dan Y?

Bonding type Electrical conductivity

Jenis ikatan Kokonduksiani elektrik

A Ionic in aqueous and molten state Ionik dalam larutan berair dan leburan

B Covalent in aqueous and molten stateKovalen dalam larutan berair dan leburan

C Covalent in aqueous state onlyKovalen dalam larutan berair sahaja

D Ionic in molten state only Ionik dalam leburan sahaja


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42 An experiment was carried out to determine the formula of a compound, M sulphate.

5 cm3 of 0.2 mol dm-3 aqueous M nitrate is poured into 7 different test tubes. Different

volumes of 0.1 mol dm-3 aqueous potassium sulphate, K2SO4 is added to each test

tube. The height of white precipitate, M sulphate is recorded.Satu eksperimen dijalankan untuk menentukan formula suatu sebatian, M sulfat. 5 cm

3larutan M nitrat

0.2 mol dm-3

dimasukkan ke dalam 7 tabung uji berasingan. Isipadu larutan kalium sulfat, K2SO4,

yang berlainan dimasukkan ke dalam setiap tabung uji. Tinggi mendakan putih, M sulfat direkodkan.

. . . . . . . .

1 2 3 4 5 6 7

DIAGRAM 16

Diagram 16 shows the graph for height of precipitate against volume of 0.1 mol dm-3

potassium sulphate used.What is the formula for M sulphate?

Rajah 16 menunjukkan graf tinggi mendakan melawan isipadu larutan kalium sulfat 0.1 mol dm-3

.

Apakah formula bagi M sulfat?

A MSO4

B M2SO4

C M2(SO4)3

D M3(SO4)2

1.1

2.2

3.3

4.4

5.5

height of precipitate/cmTinggi mendakan

volume of K2SO4 /cm3

isipadu K2SO4


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43 A study of three metals M, N and O is carried out. It is found that metal M has the

highest tendency to lose electron while metal O has the least tendency. It can be

summarised as below:Kajian tentang tiga logam M, N dan O dijalankan. Didapati logam M mempunyai kecenderungan

untuk melepaskan elektron yang paling tinggi, manakala logam O paling rendah. Ia boleh disimpulkan

seperti di bawah

M N O

Tendency to lose electron decreasesKecenderungan melepaskan elektron berkurang

Which of the following statements are true of the metals M, N and O?Manakah antara penyataan berikut benar tentang logam M, N dan O?

I M displaces N from aqueous N nitrateM menyesarkan N dari larutan N nitrat

II M will corrode if placed in contact with O in aqueous M nitrateM terkakis jika bersentuhan dengan O dalam larutan M nitrat

III N is the positive terminal in a chemical cell using both N and O as electrodesN adalah terminal positif dalam sel kimia yang menggunakan N dan O sebagai elektrod.

IV The voltage for chemical cell using M and O is bigger than chemical cell using

N and O. Nilai voltan bagi sel kimia menggunakan M dan O adalah lebih tinggi dari sel kimia

menggunakan N dan O

A I, II and III only

B I, II and IV only

C I, III and IV only

D II, III and IV only

44 Which of the following solutions reacts completely with 40 cm3 of 1.0 mol dm-3

sulphuric acid, H2SO4.Manakah antara larutan berikut bertindak balas lengkap dengan 40 cm3 asid sulfurik 1.0 mol dm-3?

I 40 cm3 of 1.0 mol dm-3NaOH

II 20 cm

3

of 2.0 mol dm

-3

KOHIII 10 cm3 of 2.0 mol dm-3 Ba(OH)2

IV 10 cm3 of 4.0 mol dm-3 Ba(OH)2

A I and II only

B I and III only

C II and IV only

D IV only


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45 When solution X is added gradually to sulphuric acid, the electric current decreases

slowly and then increases as shown in Diagram 17.Apabila larutan X dicampur sedikit demi sedikit ke dalam asid sulfurik, arus elektrik berkurang secara

beransur-ansur dan kemudian meningkat seperti ditunjukkan dalam Rajah 17.

Diagram 17

Which of the following is solution X?Manakah antara berikut larutan X?

A Silver nitrateArgentum nitrat

B Ammonium hydroxideAmmonium hidroksida

C Zinc chlorideZink klorida

D Barium hydroxideBarium hidroksida

46 The following information shows the effect of a particular factor on the rate of

reaction.Maklumat berikut menunjukkan kesan suatu faktor yang mempengaruhi kadar tindak balas.

Which of the following can cause the above effect?Manakah antara berikut memberikan kesan seperti di atas?

A Increasing total surface area of reactants.Menambah jumlah luas permukaan bahan tindak balas

B Increasing the concentration of reactants.Menambah kepekatan bahan tindak balas

C Adding a catalyst.Menambah mangkin

D Increasing temperature of reactantsMenaikkan suhu bahan tindak balas

Particles have high kinetic energy[Zarah mempunyai tenaga kinetik yang tinggi]

Numbers of particles with activation energy increases[Bilangan zarah yang mempunyai tenaga pengaktifan bertambah]

Frequency of collision between particles increases[Frekuensi perlanggaran antara zarah bertambah]

Frequency of effective collision increases[Frekuensi perlanggaran efektif bertambah]


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47 Excess calcium carbonate is added to 50 cm3 of 0.1 mol dm-3 hydrochloric acid.

Volume of carbon dioxide gas released is recorded and plotted against time taken.

Diagram 18 shows the graph of volume of carbon dioxide against time for the reactionKalsium karbonat berlebihan ditambah kepada 50 cm3 asid hidroklorik 0.1 mol dm-3.

Isipadu karbon dioksida dibebasksn dicatat dan diplot melawan masa.

Rajah 18 menunjukkan graf isipadu karbon dioksida melawan masa untuk tindak balas tersebut.

DIAGRAM 18Which of the following graph is possible if the experiment is repeated using 25 cm3 of

0.2 mol dm-3 hydrochloric acid? Manakah antara graf berikut yang mungkin jika eksperimen diulang menggunakan 25 cm

3asid

hidroklorik 0.2 mol dm-3 ?

AB

C D


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48 Diagram 19 shows the set-up of apparatus usedto study the transfer of electrons at a

distance.Rajah 19 menunjukkan susunan radas yang digunakan untuk mengkaji pemindahan elektron pda suatu

jarak.

DIAGRAM 19

After a few hours, there is no deflection of the galvanometers needle. This is because

Selepas beberapa jam, tiada pesongan pada jarum galvanometer. Ini disebabkan

A both electrolytes are oxidising agentkedua elektrolit adalah agen pengoksidaan

B aqueous potassium nitrate is used as salt bridgelarutan akueus kalium nitrat digunakan sebagai titian garam

C no supply of electric currenttiada bekalan arus elektrik

D platinum electrode usedelektrod platinum digunakan

49 The burning of 0.6 g of X causes the temperature of 100 cm3 water to increase by

12oC.

What is the heat of combustion of X?

[ relative molecular mass of X = 60; specific heat capacity of water = 4.2 J g -1oC-1]Pembakaran 0.6 gram bahan X menyebabkan suhu 100 cm

3air naik sebanyak 12

oC.

Apakah haba pembakaran bagi bahan X?

A 50.4 kJ mol-1

B 72.0 kJ mol-1

C 302.4 kJ mol-1

D 504.0 kJ mol-1


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50 When 100 cm 3 of 1.0 mol dm-3 of sodium hydroxide is added to 100 cm 3 of

1.0 mol dm-3 of hydrochloric acid, temperature rises by 7C.

Which of the following mixtures will produce an increment of 14C in temperature?

Apabila 100 cm3

natrium hidroksida 1.0 mol dm-3

ditambah kepada 100 cm3

asid hidrokorik 1.0 mol

dm-3

suhu menaik sebanyak 7oC.

Manakah antara campuran berikut akan menghasilkan kenaikan suhu sebanyak 14o

C?

A 50 cm 3 of 1.0 mol dm-3 of sodium hydroxide 50 cm 3 of 1.0 mol dm-3 of

hydrochloric acid

50 cm3

natrium hidroksida 1.0 mol dm-3 dan 50 cm3

asid hidrokorik 1.0 mol dm-3

B 50 cm 3 of 2.0 mol dm-3 of sodium hydroxide and 50 cm 3 of 2.0 mol dm-3 of

hydrochloric acid

50 cm3


dan 50 cm3


C 100 cm 3 of 1.0 mol dm-3 of sodium hydroxide and 100 cm 3 of 4.0 mol dm-3

hydrochloric acid

100 cm3


dan 100 cm3


D 200 cm 3 of 1.0 mol dm-3 sodium hydroxide and 200 cm 3 of 1.0 mol dm-3

hydrochloric acid

200 cm3


dan 200 cm3


END OF QUESTION PAPERKERTAS SOALAN TAMAT

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Soalan Percubaan - 2007