1 Diagram 1 shows the standard representation of the fluorine atom. What is the number of electrons for the atom? star A 7 B 9 C 10 D 19 T4 Chapter 2.3 Atomic Structure
2 Diagram 2 shows a child eating his favorite food. What food additives is added to the food? star A Pectin B Lecithin C Tocopherol D Benzoic acid T5 Chapter 5.3 Food Additives
3 The relative molecular mass of XSO_4 is 160. What is the relative atomic mass of X? [Relative atomic mass: S = 32, O = 16] star A 64 B 112 C 208 D 256 T4 Chapter 3.1 Relative Atomic Mass and Relative Molecular Mass
4 Table I shows the isotopes and their uses. | Isotope | Uses | | Hydrogen-3 | Detect leakage in underground pipes | | Lead-210 | Use for determining the age of sand and earth layers up to 80 years. | | Sodium-24 | Use as a detector to study sewage and liquid wastes. | | Phosphorus-32 | Used in radiotherapy to kill cancer cells. | Which are isotopes given, is correct in terms of its uses? star A Hydrogen-3 B Lead-210 C Sodium-24 D Phosphorus-32 T4 Chapter 2.4 Isotopes and Its Uses
5 Group 17 elements in the Periodic Table of Elements are also known as the halogen group. Which of the following are correct for Group 17 elements? I Molecular size become smaller when going down the group II Low melting and boiling points when going down the group III Valence shell has seven electrons IV Atoms form negatively charged ion star A I and II B I and IV C II and III D III and IV T4 Chapter 4.5 Elements in Group 17
6 Diagram 3 shows the standard representation of atoms of elements X and Y. Which of the following are correct describes about the formation of a compound between the two elements? I 1 atom X and 2 atom Y share electrons II Atom X releases 2 electrons and atom Y receives 2 electrons III 1 X atom and 2 Y atoms are required in the formation of the compound IV 1 X atom and 1 Y atom are required in the formation of the compound star A I and II B I and III C II and IV D III and IV T4 Chapter 5.1 Basics of Compound Formation
7 The reaction of 0.05 mol of copper(II) oxide, CuO with hydrogen gas forms a brown solid, Y. What mass of Y is formed from the reaction? [Relative atomic mass: Cu = 64, O = 16] star A 0.8 g B 2.4 g C 3.2 g D 4.0 g T4 Chapter 3.2 Mole Concept T4 Chapter 3.4 Chemical Equation
8 Diagram 4 shows the apparatus set-up to study physical properties of substance X. State the physical properties of substance X other than shown in Diagram 4. I. Soluble in organic solvent II. Soluble in water III. Low melting and boiling points IV. High melting and boiling point star A I and II B I and III C II and III D II and IV T4 Chapter 5.7 Properties of Ionic Compounds and Covalent Compounds
9 Table 2 shows elements of period 3 in the Periodic Table of Elements. | Elements | Na | Mg | Al | Si | P | S | Cl | Ar | Which of the following is correct about the change in the physical properties of elements across the period? star A Electronegativity increases B Relative atomic mass decreases C Atomic radius increases D Number of valence electrons decreases T4 Chapter 4.6 Elements in Period 3
10 The following equation represents the reduction process of iron(III) oxide by magnesium. 3Mg + Fe_2O_3 -> 3MgO + 2Fe What is the mass of iron produced from 16.0 g of iron(III) oxide? [Relative atomic mass: Fe = 56, Mg = 24, O = 16] star A 4.8 g B 5.6 g C 11.2 g D 112.0 g T4 Chapter 3.4 Chemical Equation
11 Diagram 5 shows the formation of the X bond. Which of the following statements explain the formation of X bond? star A 2 hydrogen atoms donate 1 electron each to 1 oxygen atom to achieve a stable duplet electron arrangement. B 2 hydrogen atoms share 2 electrons with 1 oxygen atom from the same molecule to achieve a stable duplet electron arrangement. C Hydrogen atom form attraction forces with oxygen atom from another molecules. D Hydrogen atom shares the lone pair of electrons with water molecule. T4 Chapter 5.4 Hydrogen Bond
12 Which of the elements in group 18 is correct in terms of its uses. | | Element | Uses | |---|---|---| | A | Ne | Used in anesthetics | | B | He | Used in divers' oxygen tank | | C | Ar | Used in billboard lighting | | D | Xe | Filled into an electrical bulb | star A Ne B He C Ar D Xe T4 Chapter 4.3 Elements in Group 18
13 Which of the following types of particles is correctly classified? | | Atom | Molecule | Ion | |---|---|---|---| | A | Bromine | Zinc sulphate | Copper(II) oxide | | B | Bromine | Copper(II) oxide | Carbon dioxide | | C | Water | Bromine | Silver nitrate | | D | Copper | Bromine | Silver nitrate | star A Bromine, Zinc sulphate, Copper(II) oxide B Bromine, Copper(II) oxide, Carbon dioxide C Water, Bromine, Silver nitrate D Copper, Bromine, Silver nitrate T4 Chapter 2.1 Basic Concepts of Matter
14 Diagram 6 shows the situation of a woman when she is outside the house during the day. What is the possible harmful chemical in the cosmetics used by the woman that caused her to have those side effects? star A Mercury B Hydroquinone C Betamethasone valerate D Tretinoin T5 Chapter 5.4 Medicines and Cosmetics
15 Diagram 7 shows the apparatus set-up for the preparation of a salt. Which of the following salt will be produced through the reaction? star A Copper(II) chloride B Silver chloride C Sodium chloride D Magnesium chloride T4 Chapter 6.9 Preparation of Salts
16 Tyre are products produced from natural rubber through a chemical process. What is chemical substance added in the process and the characteristic of the rubber produced? | | Chemical substance | Rubber characteristics | |---|---|---| | A | Tetrachloromethane | High heat resistance | | B | Tetrachloromethane | Less elastic | | C | Disulphur dichloride | High heat resistance | | D | Disulphur dichloride | Less elastic | star A Tetrachloromethane, High heat resistance B Tetrachloromethane, Less elastic C Disulphur dichloride, High heat resistance D Disulphur dichloride, Less elastic T5 Chapter 4.2 Natural Rubber
17 Diagram 8 shows the reaction to determine the alkaline properties. What are solvents X and Y? | | Solvent X | Solvent Y | |---|---|---| | A | Ethanol | Water | | B | Water | 1,1,1-trichloroethane | | C | Formaldehyde | Methylbenzene | | D | Toluene | Water | star A Ethanol, Water B Water, 1,1,1-trichloroethane C Formaldehyde, Methylbenzene D Toluene, Water T4 Chapter 6.1 The Role of Water in Showing Acidic and Alkaline Properties
18 Diagram 9 shows the apparatus set-up for the titration of XOH solution and H_2Y acid. What is the volume of H_2Y acid needed to neutralise XOH solution? star A 10 cm^3 B 20 cm^3 C 30 cm^3 D 40 cm^3 T4 Chapter 6.7 Neutralisation
19 Table 3 shows two set of experiments to determine the rate of reaction. | Experiment | Reactants | |---|---| | I | Excess calcium carbonate, CaCO_3 powder + 50 cm^3 hydrochloric acid, HCl, 0.1 mol dm^-3 | | II | Excess calcium carbonate, CaCO_3 powder + X cm^3 hydrochloric acid, HCl, Y mol dm^-3 | The rate of reaction for experiment II was higher and the carbon dioxide gas produced is double compared to experiment I. Which of the following are the value of X and Y? | | X | Y | |---|---|---| | A | 50 | 0.2 | | B | 100 | 0.2 | | C | 50 | 0.3 | | D | 75 | 0.3 | star A 50, 0.2 B 100, 0.2 C 50, 0.3 D 75, 0.3 T4 Chapter 7.2 Factors Affecting Rate of Reactions
20 Diagram 10 shows the apparatus set-up to study the transfer of electron at a distance. Which of the following is correct based on Diagram 10? star A Electron flow through wires from Y to X electrode B Observation brown to green colour at electrode X C Iron deposited at electrode X D Fe^2+ ions release electron to form Fe^3+ ions T5 Chapter 1.3 Voltaic Cell
21 Lead crystal glass is used to produce star A Laboratory glassware B Telescope glass C Prism D Drinking water bottle T4 Chapter 8.2 Composition of Glass and Its Uses
22 Diagram 11 shows curve M which is obtained when excess granulated zinc is reacted with 50 cm^3 of 1.0 moldm^-3 hydrochloric acid. Which of the following reaction produces curve N? star A Excess granulated zinc + 100 cm^3 of 2.0 moldm^-3 of hydrochloric acid B Excess granulated zinc + 25 cm^3 of 2.0 moldm^-3 of hydrochloric acid C Excess zinc powder + 50 cm^3 of 2.0 moldm^-3 of hydrochloric acid D Excess zinc powder + 50 cm^3 of 1.0 moldm^-3 of hydrochloric acid T4 Chapter 7.2 Factors Affecting Rate of Reactions
23 Diagram 12 shows the curves K and L obtained for decomposition of hydrogen peroxide solution in the presence of a catalyst. Curve K is obtained by using 50 cm^3 of 1.0 mol dm^-3 of hydrogen peroxide, H_2O_2 solution at temperature 25°C. Which of the following would obtain curve L? | | Hydrogen peroxide Volume (cm^3) | Hydrogen peroxide Concentration (mol dm^-3) | Temperature (°C) | |---|---|---|---| | A | 25 | 0.5 | 30 | | B | 25 | 1.0 | 25 | | C | 50 | 0.5 | 25 | | D | 50 | 1.0 | 30 | star A 25, 0.5, 30 B 25, 1.0, 25 C 50, 0.5, 25 D 50, 1.0, 30 T4 Chapter 7.2 Factors Affecting Rate of Reactions
24 Diagram 13 shows the apparatus set-up for the reaction between propanol and acidic potassium dichromate (VI) to produce substance Q. Substance Q produced is reacted with propanol to form an ester. Which of the following is the molecular formula for ester formed? star A C_2H_5COOC_3H_7 B C_3H_7COOC_2H_5 C C_2H_5COOC_2H_5 D C_3H_7COOC_3H_7 T5 Chapter 2.3 Chemical Properties and Interconversion of Compounds Between Homologous Series
25 There are four solutions with different pH values. Which solution has the highest degree of dissociation in water? star A Solution P: pH value 6 B Solution Q: pH value 1 C Solution R: pH value 3 D Solution S: pH value 8 T4 Chapter 6.3 Strength of Acids and Alkalis
26 Table 4 shows the observations for two tests conducted to confirm the cation and anion present in salt K solution. | Test | Observation | | :--- | :--- | | | | Which of the following is the cation and anion present in salt K solution? star A Pb^2+, SO_4^2- B Fe^2+, SO_4^2- C Fe^3+, SO_4^2- D Pb^2+, Cl^- T4 Chapter 6.11 Qualitative Analysis
27 Diagram 14 shows energy profile diagram for a reaction. Which of the following statements correctly describes the energy profile diagram? star A The kinetic energy of the reactant particles of curve 2 is lower than the kinetic energy of the reactant particles of curve 1. B The size of zinc for curve 2 is smaller than the size of zinc for curve 1. C The number of hydrogen ions, H^+ per unit volume of curve 2 is higher than curve 1. D More reactant particles of curve 2 achieve the activation energy than curve 1. T4 Chapter 7.4 Collision Theory
28 Diagram 15 shows machines that are widely used in hospitals with various uses such as to detect tumor problems. This machine uses electromagnet. State the electromagnetic properties that allow machine to detect diseases more accurately. star A Low heat and electrical conductivity B High strain strength C No resistance at low temperatures D High compressive strength T4 Chapter 8.4 Composite Materials and Its Importance
29 Diagram 16 shows the structure of a polymer. Which of the following is the monomer for this polymer? star A H H | | C = C | | H CH3 B CH3 - CH = CH - CH3 C H H | | C = C | | H H D H2C = C - CH3 | CH3 T5 Chapter 4.1 Polymer
30 Diagram 17 shows the results in an experiment of an electrolytic cell. What is the number of copper atoms produced at the iron spoon after the experiment is done? [Relative atomic mass Cu = 64 and Avogadro constant = 6.02 x 10^23 mol^-1] star A 2.35 x 10^22 B 5.64 x 10^22 C 7.99 x 10^22 D 1.36 x 10^23 T4 Chapter 3.2 Mole Concept T5 Chapter 1.4 Electrolytic Cell
31 Diagram 18 shows mechanism of formation of X. Which of the following equations is involved in the formation of X? I. Fe -> Fe^2+ + 2e II. Fe^3+ -> Fe^2+ + e III. Fe^3+ + OH^- -> Fe(OH)_3 IV. O_2 + 2H_2O + 4e -> 4OH^- star A I and II B I and IV C II and III D II and IV T5 Chapter 1.1 Oxidation and Reduction
32 Diagram 19 shows the apparatus set up for conversion of carbon compound Q to compound R. State the molecular formula for compound R. star A C_2H_4O_2 B C_2H_5OH C C_2H_6 D C_2H_4(OH)_2 T5 Chapter 2.3 Chemical Properties and Interconversion of Compounds Between Homologous Series
33 Diagram 20 shows the structural formula of a carbon compound. State the name of the compound based on the IUPAC nomenclature. star A 4,5-dimethyl-3-propyl hexane B 2,3-methyl-4-ethyl heptane C 3-propyl-4,5-dimethyl hexane D 4-ethyl-2,3-dimethylheptane T5 Chapter 2.4 Isomers and Naming Based on IUPAC Nomenclature
34 Diagram 21 shows the apparatus setup to determine the heat of combustion of methanol. The heat of combustion of methanol obtained is -938.29 kJ mol^-1. Calculate the temperature change in the reaction. [Relative atomic mass: H = 1, C = 12, O = 16; Specific heat capacity of water = 4.2 J g^-1 °C^-1] star A 30.0 °C B 37.0 °C C 62.0 °C D 70.0 °C T5 Chapter 3.2 Heat of Reaction
35 Diagram 22 shows an application of a reaction in a daily life. Which of the following equations represents the same type of reaction as that reaction? star A Zn + CuSO_4 -> ZnSO_4 + Zn B HCl + NaHCO_3 -> NaCl + CO_2 + H_2O C Na_2CO_3 + CaCl_2 -> CaCO_3 + NaCl D N_2 + O_2 -> 2 NO T5 Chapter 3.1 Heat Change in Reactions
36 Diagram 23 shows the structural formula of homologous series A and B. | A | B | |---|---| | | | Which of the following is correct related to A and B? | | A | B | |---|---|---| | A | Soluble in water | Soluble in water | | B | Soluble in water | Insoluble in water | | C | Functional group is hydroxyl | Functional group is carboxyl | | D | Burns with more sooty flame | Burns with less sooty flame | star A Soluble in water, Soluble in water B Soluble in water, Insoluble in water C Functional group is hydroxyl, Functional group is carboxyl D Burns with more sooty flame, Burns with less sooty flame T5 Chapter 2.2 Homologous Series T5 Chapter 2.3 Chemical Properties and Interconversion of Compounds Between Homologous Series
37 Diagram 24 shows a chemical cell and standard electrode potential values. Calculate the cell voltage produced. | Half cell reaction | E° (V) (298K) | |---|---| | Mg^2+(ak) + 2e^- -> Mg(s) | -2.38 | | Cu^2+(ak) + 2e^- -> Cu(s) | +0.34 | star A +2.72 V B -2.72 V C -2.04 V D +2.04 V T5 Chapter 1.3 Voltaic Cell
38 Diagram 25 shows the apparatus set-up for a chemical reaction. Heat of displacement for this reaction is -150 kJ mol⁻¹. What is the heat change when 3.2 g copper is formed in this reaction? [Relative atomic mass: Cu = 64] star A 0.13 kJ B 1.37 kJ C 7.50 kJ D 3000 kJ T5 Chapter 3.2 Heat of Reaction
39 The following thermochemical equation represents the decomposition reaction of calcium carbonate. CaCO_3 -> CaO + CO_2 ΔH = + 540 kJ mol⁻¹ Which of the following is correctly describes the equation? star A The temperature of the reactant increases during the reaction. B 540 KJ of heat is released during the reaction. C Total energy content of reactant is higher than total energy content of product. D The heat energy absorbed to break the CaCO_3 bond is greater than the heat energy released during the formation of CaO and CO_2 bonds. T5 Chapter 3.1 Heat Change in Reactions
40 Diagram 26 shows the substance used in agriculture that is produced from the wastewater treatment process. Which of the following level of waste management, is the level for the production of the substance? star A Further treatment of wastewater B Effluent release C Sludge collection D Electro-collection process T5 Chapter 5.6 Application of Green Technology in Industrial Waste Management