1 Diagram 1 shows a safety equipment in the laboratory. What is the function of this equipment? star A A specially designed equipment to carry out experiments that release toxic vapours, flammable or pungent smells B Used to wash and clean the body when an accident occurs on parts of the body C Used for extinguishing fire in the laboratory D Used to remove chemical substances, oil, dirt and microorganisms from the hands T4 Chapter 1.3 Usage, Management and Handling of Apparatus and Materials
2 In the field of chemistry, the unit mole is used to measure the amount of substance. According to the International Union of Pure and Applied Chemistry, one mole of substance contains a fixed value known as the Avogadro constant, N_A. Which of the following value is the Avogadro number? star A 6.02 x 10^22 B 6.02 x 10^24 C 6.02 x 10^23 T4 Chapter 3.2 Mole Concept
3 Which of the following is the property of ionic compound? star A Does not dissolve in water B High melting point and boiling point C Does not conduct electricity in aqueous state D Conduct electricity in solid state T4 Chapter 5.7 Properties of Ionic Compounds and Covalent Compounds
4 Which of the following is the unit for rate of reaction? star A g mol^-1 B mol dm^-3 C g dm^-3 D cm^3 s^-1 T4 Chapter 7.1 Determining Rate of Reaction
5 Which of the following is true about reduction reaction? star A Reduction reaction takes place when a reactant loses oxygen B Reduction reaction takes place when a reactant loses hydrogen C Reduction reaction takes place when a reactant loses electron D Reduction reaction takes place when the oxidation number of an element in reactant increases T5 Chapter 1.1 Oxidation and Reduction
6 Which statement exactly explains the meaning of heat of displacement? star A The heat of displacement is the heat absorbed when one mole of a metal is displaced from its salt solution by a more electropositive metal B The heat of displacement is the heat change when one mole of a metal is displaced from its salt solution by a more electronegative metal C The heat of displacement is the heat change when one mole of a metal is displaced from its salt solution by a more electropositive metal D The heat of displacement is the heat released when one mole of a metal is displaced from its salt solution by a more electronegative metal T5 Chapter 3.2 Heat of Reaction
7 Which statement explains the effectiveness of cleansing action of detergent? star A Effective in hard water B Less effective in acidic water C Not effective in soft water T5 Chapter 5.2 Cleaning Agents
8 A silver atom has 47 protons and its nucleon number is 108. A silver ion, Ag^+ is formed when a silver atom donates 1 electron. How many neutrons in a silver ion, Ag^+? star A 59 B 60 C 61 D 62 T4 Chapter 2.3 Atomic Structure
9 Chlorine is more reactive than bromine because I chlorine exists as dwiatoms gas II valence shell of bromine is further from nucleus compared to chlorine III chlorine has a stronger nucleus attraction force towards the electrons IV Van der Waals forces between bromine molecule are stronger star A I and II B II and III C I, II and IV D II, III and IV T4 Chapter 4.5 Elements in Group 17
10 Which substance has low degree of ionisation when dissolves in water? star A NaOH B H_2SO_4 C HNO_3 D NH_3 T4 Chapter 6.3 Strength of Acids and Alkalis
11 Diagram 2 shows a steel ball bearing on the surface of the bronze block using a cellophane tape, next, a weight of 1 kg is released onto the steel ball bearing. Diameter of the dent formed on the surface of the bronze block is recorded. Which of the following block will form a deeper dent as compared to bronze block? star A Duralumin B Pewter C Brass D Copper T4 Chapter 8.1 Alloy and Its Importance
12 ### Table 1 shows boiling points for 3 alkanes. | Hydrocarbon | Methane | Ethane | Propane | | Boiling point | -161.6 °C | -89 °C | -42 °C | The boiling point of methane is the lowest. Which statement exactly explains this phenomenon? star A Van der Waals forces between methane molecules are weaker B The covalent bonds between carbon atoms and hydrogen atoms in methane molecule are weak C The atomic size of methane is the smallest D The covalent bonds between methane molecules are weaker T5 Chapter 2.2 Homologous Series
13 Diagram 3 shows the structural of polythene. How many types of monomers are needed to produce this polymer? star A 1 B 2 C 3 D 4 T5 Chapter 4.1 Polymer
14 Discovered negatively-charged particles called electrons Atom is a positively-charged sphere with several electrons in it The statements above show the information of an atomic structure model. Which scientist identified it? star A J.J Thomson B Ernest Rutherford C James Chadwick D Niels Bohr T4 Chapter 2.2 The Development of the Atomic Model
15 Argon is Group 18 element. Which of the following is the use of argon in daily life? star A Used to fill in weather balloons B Used in advertising board lights C Used to fill in electric bulbs D Used in camera lights T4 Chapter 4.3 Elements in Group 18
16 Which of the following reagent is used to test the presence of cations in the salt? star A Sulphuric acid B Ammonia solution C Silver chloride D Barium chloride T4 Chapter 6.11 Qualitative Analysis
17 An alloy is a mixture of two or more elements where the main element is a metal. Scientist changes the elemental composition to produce alloys with different properties. Which of the following elements are found in bronze? star A Iron, Carbon B Aluminium, Carbon, Magnesium, Manganese C Copper, Zinc D Copper, Tin T4 Chapter 8.1 Alloy and Its Importance
18 Which of the following is the molecular formula for butanol? star A C_3H_8O B C_4H_8O_2 C C_4H_10O D C_3H_6O_2 T5 Chapter 2.2 Homologous Series
19 Which of the following is the illustration of thermoplastic polymer? star A A Figure B B Figure C C Figure T5 Chapter 4.1 Polymer
20 Chemical equation can be interpreted qualitatively and quantitatively. Which of the following is the balanced chemical equation for the following reaction? Sodium metal reacts with oxygen to form sodium oxide star A Na + O → NaO B Na + O_2 → NaO_2 C 2Na + O_2 → 2NaO D 4Na + O_2 → 2Na_2O T4 Chapter 3.4 Chemical Equation
21 Element P and element Q react to form a covalent compound with formula PQ_2. Which of the following is true? | | Electron arrangement of atom P | Electron arrangement of atom Q | | A | 2.4 | 2.6 | | B | 2.8.2 | 2.8.7 | | C | 2.5 | 2.7 | | D | 2.1 | 2.7 | star A 2.4 and 2.6 B 2.8.2 and 2.8.7 C 2.5 and 2.7 D 2.1 and 2.7 T4 Chapter 5.1 Basics of Compound Formation T4 Chapter 5.3 Covalent Bond
22 What is the yellow precipitate formed when sodium thiosulphate, Na_2S_2O_3 solution reacts with sulphuric acid, H_2SO_4? star A Sulphur dioxide B Sulphur trioxide C Sodium sulphate D Sulphur T4 Chapter 7.2 Factors Affecting Rate of Reactions
23 Fe^3+ ion in solution can be converted to Fe^2+ ions by adding zinc powder. Which of the following can replace zinc powder in this reaction? star A Bromine water B Potassium iodide solution C Potassium hexacyanoferrate(II) solution D Acidified potassium manganate(VII) solution T5 Chapter 1.1 Oxidation and Reduction
24 The following thermochemical equation represents the precipitation reaction between barium ion and sulphate ion. Ba²⁺ (aq) + SO₄²⁻ (aq) → BaSO₄ (s); ∆H = -x kJ mol⁻¹ Which of the following statements is true about the above equation? star A Yellow precipitate is formed B An endothermic reaction occurs C Heat is absorbed from the surroundings D Final temperature of the mixture is higher than initial temperature T5 Chapter 3.1 Heat Change in Reactions T5 Chapter 3.2 Heat of Reaction
25 Which of the following statements is correct about fats and oils? I Fats and oils are esters II Fats and oils are obtained from animal sources III Fats are solid and oils are liquid at room temperature IV Unsaturated fats can be converted to saturated fats through the process of oxidation star A I and II B I and III C II and IV D III and IV T5 Chapter 5.1 Oils and Fats
26 Diagram 4 shows a pot made of stainless steel. Stainless steel contains 73% iron, 1% carbon, 18% chromium and 8% nickel. Calculate the mass of iron required to produce a pot of mass 665 g. star A 146.30 g B 147.00 g C 419.00 g D 485.45 g T4 Chapter 8.1 Alloy and Its Importance
27 1.2 g of element X react with 0.8 g of element Y to form a compound with the formula XY. What is the relative atomic mass of X? [Relative atomic mass of Y is 16] star A 40 B 27 C 24 D 16 T4 Chapter 3.2 Mole Concept T4 Chapter 3.3 Chemical Formula
28 X g of sodium chloride is dissolved in 300 cm^3 of distilled water to produce 0.005 mol dm^-3 of sodium chloride solution. What is X? [Relative atomic mass: Na = 23, Cl = 35.5] star A 0.026 g B 0.088 g C 1.026 g D 1.500 g T4 Chapter 6.5 Concentration of Aqueous Solution
29 Diagram 5 shows the preparation of lead(II) chloride. What is the concentration of sodium chloride solution needed to react completely with lead(II) nitrate solution? star A 2.0 mol dm^-3 B 1.0 mol dm^-3 C 1.5 mol dm^-3 D 0.5 mol dm^-3 T4 Chapter 3.4 Chemical Equation T4 Chapter 6.5 Concentration of Aqueous Solution T4 Chapter 6.9 Preparation of Salts
30 ### Table 2 shows the volume of carbon dioxide gas collected in an experiment. | Time (s) | 0 | 30 | 60 | 90 | 120 | 150 | 180 | 210 | 240 | | Volume of CO_2 (cm^3) | 0 | 20.0 | 30.0 | 31.0 | 32.0 | 32.5 | 33.0 | 33.0 | 33.0 | What is the overall average rate of reaction? star A 0.14 cm^3s^-1 B 0.18 cm^3s^-1 C 0.22 cm^3s^-1 D 0.37 cm^3s^-1 T4 Chapter 7.1 Determining Rate of Reaction
31 Diagram 6 shows the curve P and curve Q obtained for decomposition of hydrogen peroxide solution in the presence of a catalyst. Curve P is obtained by using 50 cm³ of 1.0 mol dm⁻³ of hydrogen peroxide solution at temperature 21 °C. Which of the following can produce curve Q? | | Volume (cm³) | Concentration (mol dm⁻³) | Temperature (°C) | | A | 25 | 0.5 | 30 | | B | 50 | 2.0 | 21 | | C | 50 | 0.5 | 21 | | D | 50 | 1.0 | 30 | star A 25 cm³, 0.5 mol dm⁻³, 30 °C B 50 cm³, 2.0 mol dm⁻³, 21 °C C 50 cm³, 0.5 mol dm⁻³, 21 °C D 50 cm³, 1.0 mol dm⁻³, 30 °C T4 Chapter 7.2 Factors Affecting Rate of Reactions
32 Ali's leg was injured during loosening the soil in his farm. Ali asked his son to take substance X from the store and mix it into a plastic bag containing water. His son shake the plastic bag and pressed it onto the injured part. What is substance X? star A Calcium oxide B Calcium chloride C Ammonium nitrate D Formic acid T4 Chapter 6.8 Salts, Crystals and Their Uses in Daily Life
33 Which of the following substances is an organic compound? star A Ethyl propanoate B Tungsten carbide C Calcium carbonate D Carbon monoxide T5 Chapter 2.1 Types of Carbon Compound
34 Which substance is a natural polymer? star A Polythene B Polypropene C Polyisoprene D Polyneoprene T5 Chapter 4.2 Natural Rubber
35 Diagram 7 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 7? star A Ionic bond B Dative bond C Metallic bond D Hydrogen bond T4 Chapter 5.5 Dative Bond
36 Diagram 8 shows a structural formula of a compound that is used as an artificial banana flavouring. What is the reactants used to produce this compound? star A Butanol + butanoic acid B Butanol + pentanoic acid C Pentanol + butanoic acid D Pentanol + pentanoic acid T5 Chapter 2.3 Chemical Properties and Interconversion of Compounds Between Homologous Series
37 Ahmad immersed a piece of filter paper into a beaker containing solution P then he used solution Q to write CHEMISTRY on the filter paper after the filter paper was dried. The wording on the filter paper is yellow in colour. Which of the following pairs is solution P and solution Q? star A Sodium iodide and silver nitrate B Barium chloride and copper(II) nitrate C Barium chloride and sodium nitrate D Sodium chromate(VI) and lead(II) nitrate T4 Chapter 6.11 Qualitative Analysis
38 Diagram 9 shows a chemical cell and Table 3 shows standard electrode potential values of half-cells for some metals. | Half-cell equations | E° / V | | Zn^2+ (aq) + 2e^- ⇌ Zn (s) | -0.76 | | Cu^2+ (aq) + 2e^- ⇌ Cu (s) | +0.34 | | Ni^2+ (aq) + 2e^- ⇌ Ni (s) | -0.25 | Based on the Diagram 9 and E° values in Table 3, which pair of metal is matched correctly? | | P | Q | | A | Zn | Cu | | B | Cu | Ni | | C | Ni | Zn | | D | Zn | Zn | star A Zn and Cu B Cu and Ni C Ni and Zn D Zn and Zn T5 Chapter 1.2 Standard Electrode Potential T5 Chapter 1.3 Voltaic Cell
39 Diagram 10 shows two processes involving compound P. Which structural formula represents compound P? star A H - C = C - H | | H H B H - C - C - OH | | H H C H - C - C - OH | || H O D H - C - C - C - OH | | | H H H T5 Chapter 2.2 Homologous Series T5 Chapter 2.3 Chemical Properties and Interconversion of Compounds Between Homologous Series
40 Diagram 11 shows the energy level diagram for the reaction between 50 cm^3 of 0.2 mol dm^-3 copper(II) nitrate solution and excess metal T. [Specific heat capacity of solution = 4.2 J g^-1 °C^-1] What is the temperature change in the reaction? star A 4.5 °C B 7.5 °C C 10.5 °C D 12.5 °C T5 Chapter 3.2 Heat of Reaction