1 Diagram 1 shows a safety equipment found in a laboratory. What is the name of the equipment? star A Fire alarm B Fume chamber C Fire extinguisher D Shower and eyewash T4 Chapter 1.3 Usage, Management and Handling of Apparatus and Materials
2 Which of the following statements is true about 1 mole of substance? star A 1 mole of copper contains 6.02 x 10^23 molecules B 1 mole of neon gas contains 6.02 x 10^23 atoms C 1 mole of oxygen gas contains 6.02 x 10^23 atoms D 1 mole of water contains 6.02 x 10^23 atoms T4 Chapter 3.2 Mole Concept T4 Chapter 3.3 Chemical Formula
3 Which statement is best explains the formation of a covalent bond? star A Metal atoms share electrons with non-metal atoms B Non-metal atoms share electrons with non-metal atoms C Metal atoms donate electrons while non-metal atoms accept electrons D Non-metal atoms donate electrons while metal atoms accept electrons T4 Chapter 5.3 Covalent Bond
4 Which of the following has the highest rate of reaction? star A Rusting of iron B Fermentation of glucose C Decomposition of food D Combustion of alcohol T4 Chapter 7.1 Determining Rate of Reaction
5 Which of the following is true about the reduction reaction? star A Loss of electron B Gain of hydrogen C Gain of oxygen D Increase in oxidation number T5 Chapter 1.1 Oxidation and Reduction
6 Diagram 2 shows the apparatus set-up to determine the heat of combustion of ethanol, C_2H_5OH. What are X and Y? star A Etanol Ethanol | Air Water B Air Water | Etanol Ethanol C Naftalena Naphthalene | Air Water D Air Water | Naftalena Naphthalene T5 Chapter 3.2 Heat of Reaction
7 What is the main source in the production of soap? star A Sulphur B Petroleum C Acid D Oil T5 Chapter 5.2 Cleaning Agents
8 Which of the following is an example of matter? star A Heat B Air C Light T4 Chapter 2.1 Basic Concepts of Matter
9 Diagram 3 shows six elements of Period 4 in the Periodic Table of Elements. Which of the following is true about the elements? I Have a low melting point II Able to form coloured compounds III Do not conduct heat IV Able to show different oxidation numbers in their compounds star A I and II B I and III C II and IV D III and IV T4 Chapter 4.7 Transition Elements
10 Metal oxide X is yellow when hot and white when cold. What is X? star A Iron B Copper C Zinc D Lead T4 Chapter 6.10 Effect of Heat on Salts
11 When glass X is heated to high temperature and quickly put into cold water, X does not crack. What is the possible glass that represent X? star A Soda-lime glass B Fused silica glass C Lead crystal glass D Borosilicate glass T4 Chapter 8.2 Composition of Glass and Its Uses
12 Diagram 4 shows the chemical equation of the conversion of butanol to butene. What is process X? star A Oxidation B Hydrolysis C Dehydration D Hydrogenation T5 Chapter 2.3 Chemical Properties and Interconversion of Compounds Between Homologous Series
13 Diagram 5 shows the vulcanisation process of rubber. Which of the following are true about vulcanised rubber? star A Easier to be oxidised B More elastic C Less resistant to high heat D Soft T5 Chapter 4.2 Natural Rubber
14 Diagram 6 shows the particles arrangement for the change of state of matter. Which of the following is process X? star A Melting B Condensation C Evaporation D Sublimation T4 Chapter 2.1 Basic Concepts of Matter
15 Element X is located in Group 18 in the Periodic Table of Element. X is not the actual symbol of the element. Element X is use in the advertising board lights. What is X? star A Helium B Argon C Neon D Krypton T4 Chapter 4.3 Elements in Group 18
16 Which of the following shows the acidic properties of sulphuric acid? star A H_2SO_4 B H_3O^+ C OH^- D SO_4^{2-} T4 Chapter 6.1 The Role of Water in Showing Acidic and Alkaline Properties
17 Diagram 7 shows a type of product produced from advanced ceramic technology. State the name of the substance used to form the ceramic. star A Silicon carbide B Titanium carbide C Aluminium oxide D Zinc oxide T4 Chapter 8.3 Composition of Ceramics and Its Uses
18 Which of the following are the members of esters? I Ethyl methanoate II Butanoic acid III Propanoic acid IV Methyl pentanoate star A I and II B II and III C III and IV D I and IV T5 Chapter 2.2 Homologous Series
19 Diagram 8 shows an example of food packaging. Which of the following explains why the packaging pollutes the environment? I Easily biodegradable II Releases poisonous gases when heated III Causes the formation of algae IV Causes blockage of drainage system and flash flood star A I and II B II and III C I and IV D II and IV T5 Chapter 4.1 Polymer
20 Diagram 9 shows the appratus set-up to determine the empirical formula of metal oxide. Which statement explains why the crucible need to be covered by its lid when the metal starts to burn? star A To prevent fumes of metal oxide from escaping B To allow oxygen reacts with metal C To obtain a constant mass of metal oxide D To avoid metal from over heating T4 Chapter 3.3 Chemical Formula
21 Element Q reacts with oxygen to form a compound with formula, QO2. What is the correct electron arrangement of Q? [Proton number: O = 8] star A 2.1 B 2.2 C 2.3 D 2.4 T4 Chapter 2.3 Atomic Structure T4 Chapter 5.1 Basics of Compound Formation
22 The following equation represents a reaction. 2HCl + CaCO_3 \rightarrow CaCl_2 + H_2O + CO_2 Which of the following methods is the most suitable to increase the rate of reaction? star A Use smaller size of calcium carbonate B Decrease the volume of hydrochloric acid C Change hydrochloric acid to nitric acid D Decrease the concentration of hydrochloric acid T4 Chapter 7.2 Factors Affecting Rate of Reactions
23 Diagram 10 shows the apparatus set-up for the transfer of electrons at a distance in U-tube. State the function of Y. star A Allow the transfer of electrons from negative terminal to positive terminal B Accept electrons from potassium iodide solution C Act as an oxidising agent D Allow the flow of ions from both solutions T5 Chapter 1.3 Voltaic Cell
24 Which reaction absorbs heat from the surrounding? star A Zinc is added into sulphuric acid B Water is added to solid ammonium nitrate C Water is added to solid sodium hydroxide D Zinc is added into copper(II) sulphate solution T5 Chapter 3.1 Heat Change in Reactions
25 Which food additives is matched correctly? | Food additives | Function | | I Ascorbic acid | Prevent oxidation that causes brown fruits | | II Octyl ethanoate | Produce artificial flavour | | III Pectin | Prevent food from being spoil | | IV Aspartame | Thicken the food | star A I and II B I and IV C II and III D III and IV T5 Chapter 5.3 Food Additives
26 What is the number of atoms in 0.5 mol of ammonia gas? [Avogadro constant = 6.02 x 10^23 mol^-1] star A 6.02 x 10^23 B 0.5 x 6.02 x 10^23 C 0.5 x 2 x 6.02 x 10^23 D 0.5 x 4 x 6.02 x 10^23 T4 Chapter 3.2 Mole Concept T4 Chapter 3.3 Chemical Formula
27 Diagram 11 shows the composition of a certain compound. | Element | Percentage (%) | | X | 15.23 | | Y | 52.98 | | Z | 31.79 | What is the empirical formula of the compound? [Relative atomic mass: X = 23; Y = 80; Z = 16] star A XYZ_3 B XY_2Z C XYZ D XYZ_4 T4 Chapter 3.3 Chemical Formula
28 The relative formula mass of salt, M_2(SO_4)_3 is 342. What is the relative atomic mass of element M? [Relative atomic mass: O = 16, S = 32] star A 14 B 27 C 54 D 108 T4 Chapter 3.1 Relative Atomic Mass and Relative Molecular Mass
29 Amin wants to prepare 250 cm^3 of 0.3 mol dm^-3 sodium hydroxide solution. What is the mass of sodium hydroxide does Amin need to produce the solution? [Relative atomic mass: Na = 23, O = 16, H = 1] star A 0.075 g B 1.000 g C 2.075 g D 3.000 g T4 Chapter 6.5 Concentration of Aqueous Solution
30 0.2 mol of magnesium powder reacts with excess dilute hydrochloric acid. After 50 seconds, 0.05 mol of magnesium remains as residue. What is the average rate of reaction? star A 1.0 x 10^-3 mol s^-1 B 2.0 x 10^-3 mol s^-1 C 3.0 x 10^-3 mol s^-1 D 4.0 x 10^-3 mol s^-1 T4 Chapter 7.1 Determining Rate of Reaction
31 Diagram 12 shows curve II when excess marble reacted with 50 cm^3 of 2.0 mol dm^-3 hydrochloric acid produce carbon dioxide gas. If the experiment repeated using another solution, which solution will produce curve I in Diagram 12? star A 50 cm^3 of 1.0 mol dm^-3 hydrochloric acid B 50 cm^3 of 2.0 mol dm^-3 nitric acid C 100 cm^3 of 1.0 mol dm^-3 hydrochloric acid D 25 cm^3 of 2.0 mol dm^-3 sulphuric acid T4 Chapter 7.2 Factors Affecting Rate of Reactions
32 The heat of combustion of ethanol is -1 371 kJ mol⁻¹. If 3 g of ethanol is burnt to heat up 300 cm³ of water, calculate the temperature change. [Relative atomic mass: H = 1, C = 12, O = 16; Specific heat capacity of water = 4.2 J g⁻¹ °C⁻¹] star A 24 °C B 71 °C C 80 °C D 95 °C T5 Chapter 3.2 Heat of Reaction
33 Which compound is unsaturated hydrocarbon? star A Propene B Propane C Chloropropane D Propanol T5 Chapter 2.1 Types of Carbon Compound
34 Latex can be kept in liquid state by adding ........... star A formic acid B ethanoic acid C ammonia solution D ammonium sulphate T5 Chapter 4.2 Natural Rubber
35 Diagram 13 shows electron arrangement of the Y ion. What is the number of valence electron for atom Y? star A 1 B 2 C 6 D 7 T4 Chapter 2.3 Atomic Structure
36 Which of the following compounds will react with zinc to release hydrogen gas? star A CH_3CH_2OH B CH_3COOCH_3 C CH_3COOH D CH_3CHCH_2 T4 Chapter 6.4 Chemical Properties of Acids and Alkalis
37 A boy was stung by a bee while in his father's garden. Which of the following substance is suitable to reduce the boy's pain? star A Soft drink B Vinegar C Baking soda D Coffee powder T4 Chapter 6.7 Neutralisation
38 Table 1 shows results of displacement reaction for metal M, N, O and P. | Metal | Ag(NO_3) | Cu(NO_3)_2 | MgSO_4 | ZnSO_4 | | M | ✓ | | x | x | | N | ✓ | ✓ | x | | | O | ✓ | ✓ | | ✓ | | P | | x | x | x | Which metal has the highest tendency to donate electrons to form an ion? star A M B N C O D P T5 Chapter 1.1 Oxidation and Reduction
39 Diagram 14 shows the conversion of compound X into compound Y. Compound X is a colourless liquid, volatile easily and soluble in water. Reaction between compound X and compound Y will produce compound Z. What is compound Z? star A Ethyl ethanoate B Ethanoic acid C Ethanol D Methyl propanoate T5 Chapter 2.3 Chemical Properties and Interconversion of Compounds Between Homologous Series
40 The following thermochemical equation represents a precipitation reaction. Na_2CO_3 (ak/aq) + Ca(NO_3)_2 (ak/aq) -> CaCO_3 (p/s) + 2NaNO_3 (ak/aq) \Delta H = +30 kJ mol^-1 100 cm^3 of 1.0 mol dm^-3 sodium carbonate solution is added to 100 cm^3 of 1.0 mol dm^-3 calcium nitrate solution. What is the temperature change of this mixture? [Specific heat capacity of the solution = 4.2 J g^-1 °C^-1; Density of the solution = 1 g cm^-3] star A 0.4 °C B 0.7 °C C 3.6 °C D 7.1 °C T5 Chapter 3.2 Heat of Reaction