1 Which of the following process changes gas into liquid? star A Melting B Boiling C Condensation D Sublimation T4 Chapter 2.1 Basic Concepts of Matter
2 Which of the following scientists discovered electron? star A John Dalton B Ernest Rutherford C Niels Bohr D J.J Thompson T4 Chapter 2.2 The Development of the Atomic Model
3 Which of the following elements is located in Group 18? star A Helium B Lithium C Calcium D Magnesium T4 Chapter 4.3 Elements in Group 18
4 What is the type of chemical bond in sodium carbonate? star A Dative bond B Metallic bond C Covalent bond D Ionic bond T4 Chapter 5.2 Ionic Bond
5 Polyvinyl chloride is a polymer which can be repeatedly remoulded upon heating. What is the type of polymer? star A Natural polymer B Thermoplastic polymer C Thermosetting polymer D Elastomer polymer T5 Chapter 4.1 Polymer
6 What is the name for the reaction to prepare soap? star A Saponification B Polymerisation C Neutralisation D Fermentation T5 Chapter 5.2 Cleaning Agents
7 Which of the following factors can affect the rate of reaction? I Volume of the reactants II Concentration of the reactants III Presence of a catalyst IV Mass of the reactants star A I and II B I and IV C II and III D III and IV T4 Chapter 7.2 Factors Affecting Rate of Reactions
8 Which of the following statements is correct about empirical formula? star A Formula that shows the simplest ratio of atoms of each element in a compound B Formula that shows the actual number of atoms of each element in a molecule of a compound C Formula that shows the ratio of mole of each element in a compound D Formula that shows the number of mole of each element in a compound T4 Chapter 3.3 Chemical Formula
9 Which of the following is an oxidation reaction? star A Decreasing of oxidation number B Loss of hydrogen C Accepting of electron D Loss of oxygen T5 Chapter 1.1 Oxidation and Reduction
10 What is the meaning of heat of neutralisation? star A Heat change when acid reacts with alkali B Heat change when one mole of acid reacts with one mole of alkali C Heat change when water is formed from the reaction between an acid and an alkali D Heat change when one mole of water is formed from the reaction between an acid and an alkali T5 Chapter 3.2 Heat of Reaction
11 Which of the following statements is correct about isomer? star A Same melting and boiling point B Different chemical properties C Same physical properties D Same functional group T5 Chapter 2.4 Isomers and Naming Based on IUPAC Nomenclature
12 Which of the following substances is used in tooth implant? star A Alumina ceramic B Silicon carbide C Zirconia ceramic D Silicon nitride T4 Chapter 8.3 Composition of Ceramics and Its Uses
13 Formic acid, HCOOH is a type of acid used in latex coagulation. Which of the following statements is true about the acid? star A Ionises completely in water B Produces only one H+ ion per molecule in water C Produces high concentration of H+ ions D Has pH value 1 T4 Chapter 6.1 The Role of Water in Showing Acidic and Alkaline Properties
14 Which of the following substances is an isotope of magnesium? I 12 24 Mg II 12 26 Mg III 24 12 Mg IV 26 12 Mg star A I and II B I and IV C II and III D III and IV T4 Chapter 2.4 Isotopes and Its Uses
15 What is the energy change that happens in a chemical cell? star A Electrical energy to chemical energy B Heat energy to electrical energy C Chemical energy to electrical energy D Electrical energy to heat energy T5 Chapter 1.3 Voltaic Cell
16 Which of the following pairs correctly shows the pH value and the degree of ionisation for sulphuric acid, H_2SO_4? star A 1, High B 1, Low C 5, Low D 5, High T4 Chapter 6.2 pH Value T4 Chapter 6.3 Strength of Acids and Alkalis
17 Diagram 1 shows the lens of a spectacle made of substance X. Rajah 1 Diagram 1 What is X? star A Lead crystal glass B Borosilicate glass C Photochromic glass D Fused silica glass T4 Chapter 8.2 Composition of Glass and Its Uses
18 Diagram 2 shows the monomer for natural rubber. Rajah 2 Diagram 2 What is the name of the monomer following IUPAC nomenclature? star A 2-methylbut-1,3-diene B 3-methylbut-1,3-diene C 2-methylpent-1,3-ene D 3-methylpent-1,3-ene T5 Chapter 4.2 Natural Rubber
19 Diagram 3 shows a compound with bond Z. Ikatan Z Bond Z Rajah 3 Diagram 3 What is bond Z? star A Covalent B Dative C Hydrogen D Metallic T4 Chapter 5.5 Dative Bond
20 Element K and element S are located in Group 13 and Group 16 of the Periodic Table of Elements. Element K reacts with element S to form a compound. What is the chemical formula of the compound formed? star A KS B KS_2 C K_2S D K_2S_3 T4 Chapter 3.3 Chemical Formula
21 Table 1 shows the electron arrangement of four elements. | Element | Electron arrangement | |---|---| | R | 2.8 | | S | 2.8.2 | | T | 2.8.4 | | U | 2.8.6 | Jadual 1 Table 1 Which of the following elements will form metallic bond? star A R B S C T D U T4 Chapter 5.6 Metallic Bond
22 Antiseptic contains substance W that burns with a blue flame. What is the functional group for W? star A -C=C- B -COO- C -COOH D -OH T5 Chapter 2.2 Homologous Series
23 Diagram 4 shows substance X that is added in the making of jam. Rajah 4 Diagram 4 What is X? star A Pectin B Sugar C Gelatine D Monoglycerides T5 Chapter 5.3 Food Additives
24 Diagram 5 shows the apparatus set-up to determine the empirical formula of a metal oxide. Rajah 5 Diagram 5 Which of the following metal oxides is suitable to be used in this experiment? star A MgO B Al2O3 C ZnO D Ag2O T4 Chapter 3.3 Chemical Formula
25 Diagram 6 shows some surgical instruments made from alloy X. Rajah 6 Diagram 6 What is alloy X? star A Stainless steel B Bronze C Steel D Pewter T4 Chapter 8.1 Alloy and Its Importance
26 Which of the following is an isomer for butanol? I Butan-1-ol II 2-methylpropan-1-ol III 2-methylpropan-3-ol IV 3-methylpropan-1-ol star A I and II B I and IV C II and III D II and IV T5 Chapter 2.4 Isomers and Naming Based on IUPAC Nomenclature
27 Diagram 7 shows the apparatus set-up to investigate the transfer of electrons at a distance. Rajah 7 Diagram 7 What is Y? star A Bromine water B Chlorine water C Potassium iodide solution D Iron(III) sulphate solution T5 Chapter 1.1 Oxidation and Reduction
28 Which of the following is correct about the use of neutralisation in daily life? star A Milk of magnesia relieves chest pain B Slaked lime reduces the acidity of soil C Vinegar relieves the pain of bee sting D Toothpaste reduces the pain of jelly fish sting T4 Chapter 6.7 Neutralisation
29 Diagram 8 shows the apparatus set-up to determine the heat of combustion of alcohols. Rajah 8 Diagram 8 Which of the following alcohol gives the highest value of heat of combustion? star A Methanol B Ethanol C Propanol D Butanol T5 Chapter 3.2 Heat of Reaction
30 Diagram 9 shows curve I obtained when 1.0 g calcium carbonate chips reacts with excess sulphuric acid at 50 °C. Rajah 9 Diagram 9 Which of the following will produce curve II? star A Using 2.0 g of calcium carbonate chips B Using 1.0 g of calcium carbonate powder C Adding distilled water to the sulphuric acid D Decreasing the temperature of sulphuric acid to 30 °C T4 Chapter 7.2 Factors Affecting Rate of Reactions
31 Ali used cleansing agent X that contains CH_3(CH_2)_16COO- anions to wash his clothes during camping by a river. It was found that he needed a lot of the cleansing agent X when washing his clothes. What does Ali need to do to overcome this problem? star A Use hot water when washing B Add salt into water C Soak the clothes for a longer time D Replace cleansing agent X with detergent T5 Chapter 5.2 Cleaning Agents
32 Diagram 10 shows a chemical cell. Rajah 10 Diagram 10 Given part of the Standard Electrode Potential Series: | Half-cell equations | E° / V (298 K) | |:----------------------------------|:----------------| | Mg²⁺ + 2e⁻ ⇌ Mg | -2.38 | | 2H⁺ + 2e⁻ ⇌ H₂ | 0.00 | | Ag⁺ + e⁻ ⇌ Ag | +0.80 | What is the value of the cell's voltage? star A 0.80 V B 1.58 V C 2.38 V D 3.18 V T5 Chapter 1.3 Voltaic Cell
33 What is the relative molecular mass of 4-methylpent-2-ene? [Relative atomic mass: H = 1; C = 12] star A 56 B 70 C 84 D 86 T4 Chapter 3.1 Relative Atomic Mass and Relative Molecular Mass T5 Chapter 2.2 Homologous Series T5 Chapter 2.4 Isomers and Naming Based on IUPAC Nomenclature
34 Diagram 11 shows a graph of volume of hydrogen gas against time for the reaction between zinc and sulphuric acid. Rajah 11 Diagram 11 Curve X is obtained when 25 cm³ of 1 mol dm⁻³ sulphuric acid is added to excess zinc granules in a conical flask. Which of the following should be done to obtain curve Y? star A Replace the zinc granules with zinc powder B Add a few drops of copper(II) sulphate solution C Replace 25 cm³ of 1 mol dm⁻³ sulphuric acid with 25 cm³ of 2 mol dm⁻³ sulphuric acid D Replace 25 cm³ of 1 mol dm⁻³ sulphuric acid with 50 cm³ of 1 mol dm⁻³ sulphuric acid T4 Chapter 7.2 Factors Affecting Rate of Reactions
35 Diagram 12 shows the composition of ascorbic acid in vitamin C serum used in skin care products. Rajah 12 Diagram 12 What is the empirical formula for ascorbic acid? [Relative atomic mass: H = 1; C = 12; O = 16] star A CHO B C_3H_5O_3 C C_3H_4O_3 D C_6H_4O_3 T4 Chapter 3.3 Chemical Formula
36 Diagram 13 shows the standard representation of atom P and atom Q. Rajah 13 Diagram 13 Calculate the relative molecular mass of the compound formed when atom P forms a bond with atom Q. star A 159 B 132 C 62 D 30 T4 Chapter 2.3 Atomic Structure T4 Chapter 3.1 Relative Atomic Mass and Relative Molecular Mass T4 Chapter 5.3 Covalent Bond
37 The following chemical equation represents a reaction between chlorine gas and hot iron wool to produce brown solid X. 3Cl_2 + 2Fe -> 2X What is the mass of X formed when 120 cm^3 of chlorine gas reacted with hot iron wool at room temperature? [Relative atomic mass: Cl = 35.5; Fe = 56; Molar volume of gas at room temperature = 24 dm^3 mol^-1] star A 0.305 g B 0.542 g C 0.580 g D 0.813 g T4 Chapter 3.2 Mole Concept T4 Chapter 3.4 Chemical Equation
38 The following equation represents a chemical reaction that occurred on an iron fence. 4Fe + 3O_2 + 6H_2O -> 4Fe(OH)_3 Which of the following ways can be used to prevent this reaction from occurring? I Plate the fence with zinc II Plate the fence with copper III Apply oil on the fence IV Apply grease on the fence star A I and II B I and IV C II and III D II and IV T5 Chapter 1.6 Rusting
39 Diagram 14 shows the observations when salt solution S is tested with different alkaline solutions. Rajah 14 Diagram 14 Salt solution S is then added with sodium carbonate solution and a white precipitate forms. The white precipitate is then heated strongly. Which of the following pairs is correct about the cation in salt solution S and the observation for the residue of the heating? star A Pb^2+, Brown when hot and yellow when cold B Zn^2+, Yellow when hot and white when cold C Cu^2+, Black solid D Al^3+, White solid T4 Chapter 6.10 Effect of Heat on Salts T4 Chapter 6.11 Qualitative Analysis
40 Diagram 15 shows the graph of temperature against volume of acid added for the reaction between sulphuric acid and sodium hydroxide solution that released 5.7 kJ of heat energy. Rajah 15 Diagram 15 50 cm³ of 1 mol dm⁻³ sulphuric acid reacts completely with 100 cm³ of 1.0 mol dm⁻³ sodium hydroxide solution. Which of the following pairs is correct about the heat of neutralisation and the value of X? [Specific heat capacity of solution = 4.2 J g⁻¹ °C, density of solution = 1.0 g cm⁻³] star A 57, 9 B 57, 37 C 114, 9 D 114, 37 T5 Chapter 3.2 Heat of Reaction