1 Which of the following is not the symptoms of mercury poisoning? star A Nausea B Cough C Diarrhoea D Cold T4 Chapter 1.3 Usage, Management and Handling of Apparatus and Materials
2 Diagram 2 shows the electron arrangement of an atom of element P. What is the number of valence electrons in atom P? star A 7 B 6 C 5 D 4 T4 Chapter 2.3 Atomic Structure
3 Position in period can be determined by referring to... star A the number of shells that contain electrons. B number of valence electrons. C number of electrons. D number of protons. T4 Chapter 4.2 The Arrangement in the Periodic Table of Elements
4 Which compound is a covalent compound? star A CO B CuO C CaO D Cu(OH)_2 T4 Chapter 5.3 Covalent Bond
5 Which of the following are characteristics of synthetic polymers? - Good thermal insulation - Inert and non-reactive - Light, strong and hard - Low heat resistance star A I and III only B I, II and III only C II and IV only D I, II and IV only T5 Chapter 4.1 Polymer
6 Disinfectants and antiseptics are chemicals which are used as antimicrobial agents. What is the function of disinfectants? star A To destroy patogen B To relieve pain C To treat allergies D To reduce swelling T5 Chapter 5.4 Medicines and Cosmetics
7 Which process has the highest rate of reaction? star A Rusting B Fermentation C Condensation D Precipitation T4 Chapter 7.1 Determining Rate of Reaction
8 Which substance has the same number of atoms as 12g of carbon-12? star A 1 mol of sodium chloride, NaCl B 1 mol of ethanol, C_2H_5OH C 1 mol of neon, Ne D 1 mol of chlorine gas, Cl_2 T4 Chapter 3.2 Mole Concept
9 Which of the following is an oxidation process? star A Carbon dioxide loses oxygen B A bromine atom gains an electron C A chlorine molecule gains hydrogen D A sodium atom loses an electron T5 Chapter 1.1 Oxidation and Reduction
10 Cold packs contain chemicals that react to absorb heat. Which substance is used in cold packs? star A Ammonium nitrate B Sodium carbonate C Magnesium sulphate D Calcium chloride T5 Chapter 3.1 Heat Change in Reactions T5 Chapter 3.3 Application of Exothermic and Endothermic Reactions in Daily Life
11 Which of the following is a hydrocarbon? star A A Figure B B Figure C C Figure D D Figure T5 Chapter 2.1 Types of Carbon Compound
12 What is meant by alloy? star A Elements formed from two or more types of atoms according to a certain composition B A chemically combined mixture of metals and non-metals in which the main component is a metal C A compound with two or more elements in a specific composition where the main component is a metal D A mixture of two or more elements with a specific composition where the main element is a metal T4 Chapter 8.1 Alloy and Its Importance
13 Why can ammonia gas, NH_3 show alkalinity in water? star A Can dissolve in water to form ammonium ions and hydroxide ions B Is a less dense gas with 3 hydrogen atoms per molecule C Having a free electron pair to form a dative bond with water molecules D Is a covalent compound that dissolves in water and organic solvents T4 Chapter 6.1 The Role of Water in Showing Acidic and Alkaline Properties
14 What are the subatomic particles in the nucleus? star A Neutron only B Proton and neutron C Electron and proton D Electron and neutron T4 Chapter 2.2 The Development of the Atomic Model
15 Diagram 15 shows the apparatus set-up used to investigate the reaction of acidified potassium manganate (VII) with iron(II) sulphate solution. Which of the following is the colour change of the two solutions? star A Iron(II) sulphate solution: Green to brown; Acidified potassium manganate(VII): Purple to colourless B Iron(II) sulphate solution: Brown to green; Acidified potassium manganate(VII): Purple to colourless C Iron(II) sulphate solution: Brown to green; Acidified potassium manganate(VII): Orange to green D Iron(II) sulphate solution: Green to brown; Acidified potassium manganate(VII): Orange to green T5 Chapter 1.1 Oxidation and Reduction
16 Which of the following is true about weak acids? star A Cannot neutralize alkali B pH value greater than 7 C Able to change the color of red litmus paper to blue D Partially ionizes in water to produce hydrogen ions T4 Chapter 6.3 Strength of Acids and Alkalis
17 Which of the following is true about alloys and their main components? star A I and II B III and IV C I and III D II and IV T4 Chapter 8.1 Alloy and Its Importance
18 Diagram 18 shows molecular structure of a polymer. What is the name of the monomer of the polymer in the diagram? star A Ethene B Propene C Vinyl chloride D Styrene T5 Chapter 4.1 Polymer
19 Diagram 19 shows the formation of ammonia boron trifluoride when ammonia NH_3 reacts with boron trifluoride BF_3. What is the chemical bond shown in Diagram 19? star A Dative bond B Ionic bond C Metallic bond D Hydrogen bond T4 Chapter 5.5 Dative Bond
20 Diagram 20 shows the electron arrangement of the Q ion. Which of the following statements is correct about Q? star A Atom Q is in Group 18. B There are 12 electrons in a Q atom. C The electron configuration of the Q atom is 2.8. D Q is in Period 2 in the Periodic Table of Elements. T4 Chapter 2.3 Atomic Structure T4 Chapter 4.2 The Arrangement in the Periodic Table of Elements
21 Element S and T react to form a covalent compound with formula ST_2. Which of the following is true? star A Electron arrangement of atom S: 2.8.2; Electron arrangement of atom T: 2.8.7 B Electron arrangement of atom S: 2.1; Electron arrangement of atom T: 2.7 C Electron arrangement of atom S: 2.5; Electron arrangement of atom T: 2.7 D Electron arrangement of atom S: 2.4; Electron arrangement of atom T: 2.6 T4 Chapter 5.3 Covalent Bond
22 The tyres of an aeroplane are made of vulcanised rubber. What characteristic of vulcanised rubber makes it suitable to be used for the aeroplane? star A Resistance towards heat B Harder and stronger C Resistance towards oxidation D Elasticity T5 Chapter 4.2 Natural Rubber
23 The molecular formula of propyl propanoate is CH3CH2COOCH2CH2CH3. What is the empirical formula of propyl propanoate? star A CH2O B C2H3O2 C C3H6O D C4H3O2 T4 Chapter 3.3 Chemical Formula
24 To produce a combustion tube, material X is added to soda lime glass in the manufacturing process. What is material X? star A Boron oxide B Lead (II) oxide C Sodium carbonate D Calcium carbonate T4 Chapter 8.2 Composition of Glass and Its Uses
25 A redox reaction can be represented by the following equation. X2(aq) + 2KBr(aq) -> 2KX(aq) + Br2(aq) Element X is in Group 17 in the Periodic Table of Elements. What can be observed if element X is replaced with iodine? star A Brown gas is produced B Colourless solution is produced C No change is observed D Brown colour of the iodine is decolourized T4 Chapter 4.5 Elements in Group 17 T5 Chapter 1.1 Oxidation and Reduction
26 Which of the following is an isomer of butene? star A I and II B I and III C II and III D I, II and III T5 Chapter 2.4 Isomers and Naming Based on IUPAC Nomenclature
27 Diagram 27 shows the apparatus set up for an experiment to determine the heat of combustion of a fuel. Which of the following are used to determine the heat released of the fuel? - Rise of water temperature - Density of fuel - Mass of water - Volume of fuel star A I and III B I and II C II and IV D III and IV T5 Chapter 3.2 Heat of Reaction
28 The diagram below shows the structural formula of an organic compound. What is the IUPAC name of this compound? star A 2-pentene B 2-methylbut-1-ene C 2-methylbut-2-ene D 3-methylbut-3-ene T5 Chapter 2.4 Isomers and Naming Based on IUPAC Nomenclature
29 Diagram 29 shows the energy profile of a reaction. Ea is the activation energy for this reaction. What will change the activation energy from Ea to Ea'? star A Size B Temperature C Concentration D Catalyst T4 Chapter 7.4 Collision Theory
30 Diagram 30 shows the heating coil in an electric kettle used by a housewife. To remove the white layer, housewives need to add a substance to the kettle and leave it for an hour before washing it with soap. What is the material? star A Common salt B Vinegar C Baking powder D Soy sauce T4 Chapter 6.4 Chemical Properties of Acids and Alkalis
31 Table 31 shows information about three voltaic cells. What is the potential difference for the pair of metal S and T? star A 2.23 V B 1.17 V C 0.97 V D 2.67 V T5 Chapter 1.3 Voltaic Cell
32 Table 32 below shows the total volume of oxygen gas, O_2, collected in the decomposition reaction of hydrogen peroxide, H_2O_2. What is the overall average rate of reaction? star A 0.152 cm^3 s^-1 B 0.208 cm^3 s^-1 C 0.278 cm^3 s^-1 D 0.310 cm^3 s^-1 T4 Chapter 7.1 Determining Rate of Reaction
33 Diagram 33 show a patient consumes 10mg aspirin. The relative molecular mass of aspirin is 180. What is the number of molecules in this sample of aspirin? [Avogadro number = 6.02 x 10^23 mol^-1] star A 1.17 x 10^18 B 3.34 x 10^19 C 1.17 x 10^19 D 3.34 x 10^20 T4 Chapter 3.2 Mole Concept
34 When the hair is wet, it will stick to each other. This explains the concept and role of a Q bond in everyday life. State the Q bond. Which statement describes the formation of a Q bond? star A Dative bond: Strong electrostatic forces form bonds with water molecules B Dative bond: The lone pair of electrons in water molecule will be shared with hydrogen ion C Hydrogen bond: Week Van der Waals forces in water molecules D Hydrogen bond: Protein molecules will form bonds with water molecules. T4 Chapter 5.4 Hydrogen Bond
35 A green apple that is cut into two pieces turns brown after 15 minutes as shown at the diagram. What substance should be added to prevent the browning of the apple? star A Salt B Ascorbic acid C Gelatine D Azo compound T5 Chapter 5.3 Food Additives
36 The following chemical equation represents the comlete combustion of propane. C_3H_8 + 5O_2 -> 3CO_2 + 4H_2O What is the volume of oxygen gas used if 5.5g of propane is compleely burn in air? [Relative atomic mass: O = 16, C = 12, H=1, Molar volume of gas = 24 dm^3 mol^-1 at room conditions] star A 30.0 dm^3 B 9.0 dm^3 C 3.0 dm^3 D 15.0 dm^3 T4 Chapter 3.2 Mole Concept T4 Chapter 3.4 Chemical Equation
37 Diagram 37 shows the observation of the reaction when a piece of metal X and metal Y of the same size are put into a beaker filled with cold water. Which of the following explains the observation? star A The density of metal Y is higher than metal X. B Atoms of metal Y have more protons than atoms of metal X. C Y metal atoms give up electrons more easily than X metal atoms D Electropositivity of X metal atom is higher than Y metal atom. T4 Chapter 4.4 Elements in Group 1
38 Table 38 shows the observations of electrolysis using carbon electrode and electrolyte W. What is X? star A Argentum B Zinc C Iron D Copper T5 Chapter 1.4 Electrolytic Cell
40 Table 40 shows the temperature changes when silver nitrate solutions react with different chloride solutions. What is X? star A \frac{1}{2}\Theta B \Theta C 2\Theta D 4\Theta T5 Chapter 3.2 Heat of Reaction