1 Protium, deuterium and tritium are the isotopes of hydrogen. Which of the following is the similarity of the isotopes? star A Chemical property B Physical property C Nucleon number D Relative atomic mass T4 Chapter 2.4 Isotopes and Its Uses
2 Diagram 1 shows the apparatus set-up to determine the empirical formula of oxide X. Which of the following is metal X? star A Zinc B Copper C Magnesium T4 Chapter 3.3 Chemical Formula
3 Element Z is located in the same group as neon, Ne and krypton, Kr in the Periodic Table of Elements. Which of the following is the property of Z? star A Chemically inert B Exists as diatomic molecules C Exists as liquid at room temperature D Conducts electricity in molten and aqueous solution T4 Chapter 4.3 Elements in Group 18
4 Ionisation of acid in water affects the pH value. Which of the following gives the highest pH value? star A A Figure B B Figure C C Figure D D Figure T4 Chapter 6.2 pH Value
5 Diagram 2 shows a type of bond. Which of the following is correct about the bond? star A There is an electrostatic attraction force between the sea of electrons and the positively-charged metal ions B A type of bond where the electron pairs shared come from one atom only C A bond that is formed through the transfer of electrons between metal atoms and non-metal atoms D The forces of attraction between hydrogen atoms that have bonded with an atom of high electronegativity in another molecule T4 Chapter 5.6 Metallic Bond
6 How does temperature increase the rate of reaction? star A Increase the total number of reactant particles B Increase the kinetic energy of reactant particles C Increase the activation energy of the reaction D Increase the number of effective collisions T4 Chapter 7.4 Collision Theory
7 Glass is made up of silicon dioxide and calcium carbonate. Diagram 3 shows a cookware made from glass. What is the substance added and the new property of the glass? star A Sodium carbonate and lead(II) oxide; Low expansion coefficient B Sodium carbonate and lead(II) oxide; High expansion coefficient C Boron oxide and aluminium oxide; Low expansion coefficient D Boron oxide and aluminium oxide; High expansion coefficient T4 Chapter 8.2 Composition of Glass and Its Uses
8 The following equation represents the reaction between iron and chlorine gas. 2Fe + 3Cl_2 \rightarrow 2FeCl_3 What is the change in oxidation number of chlorine? star A +2 \rightarrow +3 B -2 \rightarrow -3 C -1 \rightarrow 0 D 0 \rightarrow -1 T5 Chapter 1.1 Oxidation and Reduction
9 Substance W has the following properties - Gives off carbon dioxide gas and water when burnt in oxygen - Dissolves in water What is substance W? star A Propanol B Pentane C Pentene D Pentanoic acid T5 Chapter 2.2 Homologous Series
10 Diagram 4 shows the blast furnace used to extract iron from its ore. Which of the following chemical equation represents the reaction in Zone 2? star A C + O_2 -> CO_2 B C + CO_2 -> 2CO C Fe_2O_3 + 3CO -> 2Fe + 3CO_2 D CaO + SiO_2 -> CaSiO_3 T5 Chapter 1.5 Extraction of Metal from Its Ore
11 Diagram 5 shows a reaction to produce compound T with the presence of concentrated sulphuric acid as a catalyst. Which of the following is the structural formula of compound T? star A A Figure B B Figure C C Figure D D Figure T5 Chapter 2.3 Chemical Properties and Interconversion of Compounds Between Homologous Series
12 Which of the following neutralisation reactions release a lower amount of heat? star A Hydrochloric acid and potassium hydroxide B Nitric acid and sodium hydroxide C Sulphuric acid and sodium hydroxide D Propanoic acid and potassium hydroxide T5 Chapter 3.2 Heat of Reaction
13 Diagram 6 shows polymer W that is widely used in the textile industry. What is the example of W? star A Polyester B Polystyrene C Nylon D Polyvinyl chloride, (PVC) T5 Chapter 4.1 Polymer
14 Table 1 shows the types and functions of food additives. Which of the following are correctly matched? star A I and II B I and III C II and IV D III and IV T5 Chapter 5.3 Food Additives
15 Diagram 7 shows the atomic symbol of element X. Which of the following is true about the atom of element X? star A Number of neutrons: 39; Electron arrangement: 2.8.8.1 B Number of neutrons: 20; Electron arrangement: 2.8.8.1 C Number of neutrons: 20; Electron arrangement: 2.8.8.2 D Number of neutrons: 19; Electron arrangement: 2.8.8.2 T4 Chapter 2.3 Atomic Structure
16 Diagram 8 shows the heating curve of solid acetic acid. Which statement can be deduced from Diagram 8? star A No heat is absorbed in the first 2 minutes B Acetic acid needs 8 minutes to melt completely C Acetic acid undergoes physical changes between second minute to sixth minute D The attractive forces between particles of acetic acid become stronger after 6 minutes T4 Chapter 2.1 Basic Concepts of Matter
17 The chemical formulae of calcium nitrate and potassium phosphate are Ca(NO3)2 and K3PO4 respectively. What is the chemical formula of calcium phosphate? star A Ca(PO4)3 B Ca(PO4)2 C Ca3PO4 D Ca3(PO4)2 T4 Chapter 3.3 Chemical Formula
18 Diagram 9 shows the electron arrangement for an atom in the Periodic Table of Elements. Which of the following statements is correct about the atom? star A Located in Group 2 B Reacts with oxygen to form an oxide C Used to fill the weather balloons D Reacts with each other to form diatomic molecule T4 Chapter 4.3 Elements in Group 18
19 Diagram 10 shows the reaction of an element W and water, H2O. What is element W? star A Magnesium B Calcium C Potassium D Lithium T4 Chapter 4.4 Elements in Group 1
20 Diagram 11 shows the electron arrangement of a carbon dioxide molecule. Which of the following is true? star A Each oxygen atom contributes one electron for sharing B One carbon atom contributes four electrons to be shared by two oxygen atoms C Four double covalent bonds are formed in a carbon dioxide molecule D One carbon atom requires two electrons to achieve the octet electron arrangement T4 Chapter 5.3 Covalent Bond
21 Diagram 12 shows a step in the preparation of a soluble sulphate salt. What is substance X? star A Lead(II) oxide B Zinc oxide C Barium hydroxide D Calcium hydroxide T4 Chapter 6.9 Preparation of Salts
22 The following equation shows the reaction between magnesium powder and 50.0 cm^3 of 1.0 mol dm^-3 of hydrochloric acid, HCl. Mg + 2HCl -> MgCl_2 + H_2 How can the rate of production of hydrogen gas be increased? star A Replace magnesium powder with magnesium granules B Decrease the volume of hydrochloric acid C Add distilled water D Add copper(II) sulphate solution T4 Chapter 7.2 Factors Affecting Rate of Reactions
23 Diagram 13 shows a graph of mass of a reaction mixture against time for the reaction between zinc carbonate and nitric acid. Which point shows the highest rate of reaction? star A P B Q C R D S T4 Chapter 7.1 Determining Rate of Reaction
24 Diagram 14 shows processes in the preparation of two different types of cleaning agents. What are substance P, substance Q, reaction Y and reaction Z? star A Substance P: Palm oil; Substance Q: Alkyl benzene; Reaction Y: Sulphonation; Reaction Z: Neutralisation B Substance P: Palm oil; Substance Q: Alkyl benzene; Reaction Y: Sulphonation; Reaction Z: Saponification C Substance P: Alkyl benzene; Substance Q: Palm oil; Reaction Y: Saponification; Reaction Z: Neutralisation D Substance P: Alkyl benzene; Substance Q: Palm oil; Reaction Y: Neutralisation; Reaction Z: Saponification T5 Chapter 5.2 Cleaning Agents
25 Diagram 15 shows the energy level diagram for a reaction. Which of the following is correct? star A Copper(II) ion is oxidized; Heat is released B Lead atom undergoes oxidation; Heat is released C Copper(II) ion is a reducing agent; Heat is absorbed D Lead atom receives electrons; Heat is absorbed T5 Chapter 1.1 Oxidation and Reduction T5 Chapter 3.1 Heat Change in Reactions
26 Diagram 16 shows the apparatus set-up for the reaction between compound Z and calcium carbonate. At the end of the experiment, limewater turns cloudy. What is the chemical formula for compound Z? star A C3H8 B C3H7OH C CH3COOCH3 D C2H5COOH T4 Chapter 6.4 Chemical Properties of Acids and Alkalis
27 Diagram 17 shows the apparatus set-up to determine the heat of reaction Which of the following statement is true? I Bond formation occurs. II The temperature decreases during the reaction. III The value of \Delta H for the reaction is negative. IV The total energy content of the products is higher than the total energy content of the reactants. star A I and II B I and III C II and IV D III and IV T5 Chapter 3.1 Heat Change in Reactions T5 Chapter 3.2 Heat of Reaction
28 Diagram 18 shows the types of polymers that is used as a packaging material. Which of the following explains why the packaging material pollutes the environment? I Biodegradable II Cause the formation of algae III Emitted toxic gases when burnt IV Cause blockage of drainage systems and flash flood star A I and II B I and III C II and IV D III and IV T5 Chapter 4.1 Polymer
29 Diagram 19 shows one of the uses of synthetic rubber. Which of the following is true about the synthetic rubber? star A Nitrile rubber; Oil and solvent resistance B Styrene-butadiene rubber; Abrasion resistance and high heat resistance C Silicone rubber; High temperature resistance and inert D Thiokol; Oil and solvent resistance T5 Chapter 4.3 Synthetic Rubber
30 Which of the following has the largest volume of gas at room condition? [Relative atomic mass: H=1, C=12, N=14, O=16, 1 mol of any gas occupied 24 dm^3 at room condition] star A 12 g of steam, H_2O B 17 g of ammonia, NH_3 C 23 g of nitrogen dioxide, NO_2 D 42 g of carbon monoxide, CO T4 Chapter 3.2 Mole Concept
31 Diagram 20 shows the position of X and Y atoms in the Periodic Table of Elements. Which of the following diagrams represent the compound formed when X reacts with Y? star A A Figure B B Figure C C Figure D D Figure T4 Chapter 5.1 Basics of Compound Formation
32 Diagram 21 shows the preparation of potassium chloride solution. What is the value of X? [Relative atomic mass: K=39, Cl=35.5] star A 59.6 g B 37.3 g C 29.4 g D 14.9 g T4 Chapter 6.9 Preparation of Salts
33 Table 2 shows the volume of hydrogen gas collected in an experiment when magnesium powder reacts with excess dilute nitric acid. What is the average rate of reaction? star A 0.089 cm^3 s^-1 B 0.188 cm^3 s^-1 C 9.000 cm^3 s^-1 D 11.250 cm^3 s^-1 T4 Chapter 7.1 Determining Rate of Reaction
34 Diagram 22 shows a preparation of Y mol dm^-3 of sodium hydroxide solution with a pH value of 13. What is the value of X? star A 0.02 mol dm^-3 B 0.1 mol dm^-3 C 0.4 mol dm^-3 D 0.5 mol dm^-3 T4 Chapter 6.2 pH Value
35 The extracted copper from copper pyrite has low degree of purity and needs to be purified through electrolysis. Which of the following apparatus set-up can be used to purify the copper? star A A Figure B B Figure C C Figure D D Figure T5 Chapter 1.4 Electrolytic Cell
36 The fuel value of charcoal is 34 kJ g⁻¹. Calculate the mass of charcoal needed to boil 2.0 dm³ of water. [Heat capacity of water = 4.2 J g⁻¹ °C⁻¹, Density of water = 1 g cm⁻³ Temperature of water at room temperature = 27.0 °C] star A 18 g B 16 g C 12 g D 7 g T5 Chapter 3.3 Application of Exothermic and Endothermic Reactions in Daily Life
37 Which of the following is the correct structural formulae and its name for the isomer of C_5H_10? star A I and II B I and III C II and III D III and IV T5 Chapter 2.4 Isomers and Naming Based on IUPAC Nomenclature
38 Table 3 shows the observations recorded when a series of tests were conducted to verify the cation and anion of compound T. What are the cation and anion present in compound T? star A Pb^2+; Cl^- B Zn^2+; SO_4^2- C Pb^2+; SO_4^2- D Zn^2+; Cl^- T4 Chapter 6.11 Qualitative Analysis
39 Diagram 23 shows the apparatus set-up to investigate the reaction between iron(III) sulphate solution with potassium iodide solution. Given the following standard electrode potential value. Fe^3+ + e^- \rightleftharpoons Fe^2+ E^0 = +0.77 V I_2 + 2e^- \rightleftharpoons 2I^- E^0 = +0.54 V Which of the following is the colour change of the two solutions? star A Iron(III) sulphate solution: Brown to green; Potassium iodide solution: Colourless to brown B Iron(III) sulphate solution: Green to brown; Potassium iodide solution: Purple to colourless C Iron(III) sulphate solution: Brown to green; Potassium iodide solution: Orange to green D Iron(III) sulphate solution: Green to brown; Potassium iodide solution: Orange to green T5 Chapter 1.1 Oxidation and Reduction T5 Chapter 1.2 Standard Electrode Potential
40 Diagram 24 shows two type of cells. Given the following standard electrode potential value. Mg^2+ + 2e^- \rightleftharpoons Mg E^0 = -2.38 V 2H^+ + 2e^- \rightleftharpoons H_2 E^0 = 0.00 V Cu^2+ + 2e^- \rightleftharpoons Cu E^0 = +0.34 V O_2 + 2H_2O + 4e^- \rightleftharpoons 4OH^- E^0 = +0.40 V S_2O_8^2- + 2e^- \rightleftharpoons 2SO_4^2- E^0 = +2.01 V Which of the following is correct? star A A Figure B B Figure C C Figure D D Figure T5 Chapter 1.2 Standard Electrode Potential T5 Chapter 1.3 Voltaic Cell T5 Chapter 1.4 Electrolytic Cell