MRSM 2007

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

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

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

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

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

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?

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

Baking powder contains sodium hydrogen carbonate. It reacts with acidic substances
to release
Serbuk penaik mengandungi natrium hidrogen karbonat. Ia bertindak balas dengan bahan berasid
untuk membebaskan

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

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

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

What is atom X?
Apakah atom X?

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

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.

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

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

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?

Unsaturated fats can be converted to saturated fats through
Lemak tak tepu boleh ditukar kepada lemak tepu melalui

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

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?

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

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

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.

2 Fe2+ + Br2 → 2 Fe3+ + 2 Br-

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

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

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

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

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

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

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

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

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

TABLE 2

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

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

– High melting point
Takat lebur yang tinggi

– Conducts electricity in the molten state
Mengalirkan elektrik dalam keadaan leburan

– Insoluble in water
Tidak larut dalam air

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

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.

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?

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 berikut benar bagi sel kimia di atas?

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

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

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

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?

In an experiment, 25 cm3 of 0.2 mol dm-3 hydrogen peroxide solution decomposes to
produce 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.

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

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

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

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

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

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.

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

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.

The heat of combustion of ethanol was found less than the theoretical value. What can
be done to improve the experimental value?

I Remove the wooden block
Keluarkan blok kayu

II Use copper container to replace beaker
Gunakan bekas kuprum menggantikan bikar

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

IV Use greater volume of water
Menggunakan isipadu air yang lebih besar
Haba pembakaran etanol didapati kurang dari nilai teori. Apa yang perlu dilakukan untuk
memperbaiki nilai eksperimen tersebut?

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?

Metal M forms a chloride compound with the formula MCl3. Given the formula of
chromate (IV) ions is CrO4 2-, 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

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)

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

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

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?

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 decreases Kecenderungan 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 nitrate
M menyesarkan N dari larutan N nitrat

II M will corrode if placed in contact with O in aqueous M nitrate
M 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 electrodes
N 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

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?

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.

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

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-3 bertindak balas lengkap dengan 0.96 g logam Q?
[Jisim atom relatif Q : 24]

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 cm3 larutan 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.

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?

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.

• 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]

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

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 reaction

Kalsium 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.

Which 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 cm3 asid hidroklorik 0.2 mol dm-3 ?

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+ Æ 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 +2

Nombor pengoksidaan mangan berubah dari +7 ke +2

II The oxidation number of hydrogen changes from +1 into 0

Nombor pengoksidaan hidrogen berubah dari +1ke 0
III The green colour of Fe2+ ions solution turn to brown Larutan hijau ion Fe2+ bertukar kepada larutan perang
IV Electrons transfer from Fe2+ ions into MnO4
–
ions solution

Elektron berpindah dari ion Fe2+ kepada ion MnO4

Diagram 19 shows the set-up of apparatus used to study the transfer of electrons at a
distance.
Rajah 19 menunjukkan susunan radas yang digunakan untuk mengkaji pemindahan elektron pda suatu
jarak.

After a few hours, there is no deflection of the galvanometer’s needle. This is because
Selepas beberapa jam, tiada pesongan pada jarum galvanometer. Ini disebabkan

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-1 o
C-1]
Pembakaran 0.6 gram bahan X menyebabkan suhu 100 cm3 air naik sebanyak 12oC.
Apakah haba pembakaran bagi bahan X?

When 100 cm3 of 1.0 mol dm-3 of sodium hydroxide is added to 100 cm3 of 1.0 mol dm-3 of hydrochloric acid, the temperature rises by 7°C.
Which of the following mixtures will produce an increment of 14°C in temperature?
Apabila 100 cm 3

natrium hidroksida 1.0 mol dm-3 ditambah kepada 100 cm 3 asid hidrokorik 1.0 mol dm-3 suhu menaik sebanyak 7oC.
Manakah antara campuran berikut akan menghasilkan kenaikan suhu sebanyak 14oC?