2 What is the chemical formula of lead (II) oxide? star A PbO B PbO_2 C Pb_2O_2 D PbO_4 T4 Chapter 3.3 Chemical Formula
3 The following equation represents the reaction to determine the empirical formula of copper (II) oxide. CuO + H_2 -> Cu + H_2O Which metal oxide has the same reaction to determine the empirical formula? star A Magnesium oxide B Aluminium oxide C Lead (II) oxide D Calcium oxide T4 Chapter 3.3 Chemical Formula
4 Which statement is not the special characteristic of transition elements? star A Functions as catalyst B Have low densities C Form coloured compound D Have more than one oxidation number T4 Chapter 4.7 Transition Elements
5 Statement below shows the physical properties of a compound. - Soluble in organic solvents - Low melting and boiling points Which substance has the physical properties as above? star A Naphthalene B Lead(II) bromide C Ammonium nitrate D Sodium chloride T4 Chapter 5.7 Properties of Ionic Compounds and Covalent Compounds
6 Table 1 shows the electron arrangement of of atoms of element R and S. | Atom R | Atom S | | :----- | :----- | | 2.4 | 2.8.7 | Table 1 What is the formula and the type of bond of the compound formed from the reaction between R and S? star A RS_4 B R_4S C R_2S D RS_2 T4 Chapter 5.1 Basics of Compound Formation T4 Chapter 5.3 Covalent Bond
7 Diagram 1 shows a reaction to prepare a salt. What salt can be produced by this reaction? star A Iron (II) chloride B Ammonium carbonate C Magnesium nitrate D Calcium sulphate T4 Chapter 6.9 Preparation of Salts
8 The chemical substance with low concentration of hydroxide ion is star A strong acid B weak acid C strong alkali D weak alkali T4 Chapter 6.3 Strength of Acids and Alkalis
9 Substance X has the following characteristics. - Turns moist blue litmus paper to red - Sour taste - Release gas bubbles when reacted with zinc powder What is the molecular formula of substance X? star A C2H6 B C2H5OH C CH3COOH D CH2COOC2H5 T4 Chapter 6.1 The Role of Water in Showing Acidic and Alkaline Properties T4 Chapter 6.4 Chemical Properties of Acids and Alkalis
10 Diagram 2 shows the apparatus setup of an experiment to determine the rate of reaction. Which of the following can increase the rate of reaction? star A Pour hydrochloric acid quickly and carefully B Record the time taken immediately when the cross mark cannot be seen C Add distilled water into the conical flask D Heat sodium thiosulphate solution before hydrochloric acid is added T4 Chapter 7.2 Factors Affecting Rate of Reactions
11 Which of the following are true about ceramic. I Strong but brittle II Heat insulator III Hard and strong IV High thermal resistant star A I, II, III B I, II, IV C I, III, IV D II, III, IV T4 Chapter 8.3 Composition of Ceramics and Its Uses
12 Which of the following pairs is the correct type of glass and its use? star A A Figure B B Figure C C Figure D D Figure T4 Chapter 8.2 Composition of Glass and Its Uses
13 Which of the following statements does not correctly describe the reduction reaction? star A Loss of oxygen B Gain of hydrogen C Loss of electrons D The oxidation number decreases T5 Chapter 1.1 Oxidation and Reduction
14 Which of the following shows the correct pair of homologous series and its functional group? star A Carboxylic acid B Alcohol C Alkene D Alkyne T5 Chapter 2.2 Homologous Series
15 Diagram 3 shows a uses of carbon compound in daily life. What is the homologous series for this carbon compound. star A Ester B Alkane C Alcohol D Carboxylic acid T5 Chapter 2.2 Homologous Series
16 Which of the following processes absorb heat from surrounding? star A Respiration B Rusting C Combustion D Photosynthesis T5 Chapter 3.1 Heat Change in Reactions
17 Why does the reactivity of Group 17 elements decrease when going down the group? star A The physical state of the elements change from gas to liquid then to solid at room temperature B The valence electrons get further away from the nucleus C The attractive force between valence electrons and the nucleus becomes stronger D The melting points of the elements decrease T4 Chapter 4.5 Elements in Group 17
18 Diagram 4 shows an incomplete Periodic Table of Elements. P and Q are not the actual symbol for the elements. Element P can react with element Q to produce an ionic compound. Which of the following is the chemical equation for this reaction? star A P + Q → PQ B P + Q_2 → PQ_2 C P + 2Q → PQ_2 D 2P + Q_2 → 2PQ T4 Chapter 3.4 Chemical Equation
19 Diagram 5 shows the standard representation of atom of element X. Which of the following atoms of element will form an ionic compound with element X and the correct chemical formula for the compound? star A X2Y3 B YX4 C X2Z D ZX2 T4 Chapter 3.3 Chemical Formula T4 Chapter 5.2 Ionic Bond
20 Diagram 6 shows a method to prepare a soluble salt. Which of the following salts can be prepared by the method above? star A Ammonium nitrate B Copper(II) sulphate C Magnesium chloride D Calcium carbonate T4 Chapter 6.9 Preparation of Salts
21 The standard electrode potential for two half-cells equation are shown below. | half-cells equation | E^o (298K) | |---|---| | Fe^3+ + e^- ⇌ Fe^2+ | E^o = + 0.77 V | | Ni^2+ + 2e^- ⇌ Ni | E^o = - 0.25 V | Which substance is the strongest reducing agent? star A Fe^3+ B Fe^2+ C Ni^2+ D Ni T5 Chapter 1.2 Standard Electrode Potential
22 Curve I in Diagram 7 is obtained when excess of zinc powder reacts with 10 cm^3 of 0.1 mol dm^-3 nitric acid. Which of the following will produce curve II in Diagram 7? star A Zinc powder and 20 cm^3 of 0.1 mol dm^-3 nitric acid B Zinc powder and 20 cm^3 of 0.2 mol dm^-3 nitric acid C Zinc powder and 10 cm^3 of 0.2 mol dm^-3 nitric acid D Zinc powder and 10 cm^3 of 0.1 mol dm^-3 nitric acid T4 Chapter 7.2 Factors Affecting Rate of Reactions
23 Compound X changes the brown colour of bromine water to colourless. What is the homologous series for X? star A Alkane B Alkene C Alcohol D Carboxylic acid T5 Chapter 2.3 Chemical Properties and Interconversion of Compounds Between Homologous Series
24 Diagram 8 shows a simple chemical cell. Which of the following solutions are suitable to use as solution Z so colourless gas bubble release at Y electrode? | Half-cell equation | E° (V) (298 K) | | :-------------------------------- | :------------- | | Mg^2+ + 2e <=> Mg | -2.38 | | Zn^2+ + 2e <=> Zn | -0.76 | | Ag^+ + e <=> Ag | +0.80 | | Cu^2+ + 2e <=> Cu | +0.34 | | 2H^+ + 2e- <=> H2 | 0.00 | | Fe^2+ + 2e- <=> Fe | -0.44 | I Zinc nitrate II Copper (II) sulphate III Silver nitrate IV Iron (II) sulphate star A I and IV B II and III C III and IV D I and III T5 Chapter 1.2 Standard Electrode Potential T5 Chapter 1.3 Voltaic Cell
25 Ripening fruits such as bananas naturally produce ethene gas which causes the fruit to ripen. Which of the following is the structural formula for ethene? star A H | H - C - H | H | H - C = C - C - H | C B H H | | H - C = C - H C H - C ≡ C - H D O || H - C - O - H T5 Chapter 2.2 Homologous Series
26 Diagram 9 is a molecular formula which represents an organic compound. What is the name of the organic compound? star A Ethyl ethanoate B Ethyl methanoate C Methyl ethanoate D Methyl methanoate T5 Chapter 2.4 Isomers and Naming Based on IUPAC Nomenclature
27 Alcohol burns completely in oxygen producing carbon dioxide gas and water. Which of the following alcohols releases the highest heat of combustion? star A Butanol B Ethanol C Methanol D Propanol T5 Chapter 3.2 Heat of Reaction
28 Diagram 10 shows an energy level diagram for the decomposition of calcium carbonate. Which statement can be deduced from Diagram 10? star A Heat is absorbed in the reaction B The reactant has higher total energy content than the products C Exothermic reaction D Temperature of mixture increased during the reaction T5 Chapter 3.1 Heat Change in Reactions
29 Diagram 11 shows the arrangement of particles for materials P, Q and R at room temperature. What are the substances of P, Q and R. star A Bromine, Magnesium, Oxygen B Oxygen, Bromine, Magnesium C Oxygen, Magnesium, Bromine D Magnesium, Bromine, Oxygen T4 Chapter 2.1 Basic Concepts of Matter
30 The following equation represents the reaction between zinc granule and hydrochloric acid. Zn + 2HCl -> ZnCl_2 + H_2 What is the volume of the gas hydrogen produced when 50 cm^3 of 1.0 mol dm^-3 hydrochloric acid react completely with 5 g of zinc granule at room temperature? [Relative atomic mass: Zn= 65, Molar volume of gas at room condition=24 dm^3 mol^-1] star A 1.88 dm^3 B 0.60 dm^3 C 1.20 dm^3 D 3.75 dm^3 T4 Chapter 3.2 Mole Concept
31 Silicon is an element that is widely used in the production of microchips. Which property allows silicon to be used as a microchip in industry? star A Resistant to corrosion B Have low densities C High compression strength D Good electrical conductor at high temperature T4 Chapter 4.6 Elements in Period 3
32 A student was stung by a wasp. Which substance is best applied to treat the student immediately? star A Baking powder B Toothpaste C Vinegar T4 Chapter 6.7 Neutralisation
33 Table 2 shows the value of standard electrode potential, Eº of several half equation reactions. | Half-cell equation | Eº (V) (298 K) | | Mg^2+ + 2e ⇌ Mg | -2.38 | | Zn^2+ + 2e ⇌ Zn | -0.76 | | Ag^+ + e ⇌ Ag | +0.80 | | Cu^2+ + 2e ⇌ Cu | +0.34 | Table 2 Which of the following pair of metals will produces the highest voltage in chemical cell? I Magnesium II Zinc III Silver IV Copper star A I and III B I and IV C II and III D III and IV T5 Chapter 1.3 Voltaic Cell
34 The relative molecular mass of J_2(SO_4)_3 is 342. What is the relative atomic mass of element J? [Relative atomic mass: O = 16, S = 32] star A 27 B 54 C 118 D 123 T4 Chapter 3.1 Relative Atomic Mass and Relative Molecular Mass
35 Manisah felt the glare of the sunlight as she rested in her living room. She wanted to change the glass window to solve the problem. The new window should contain substance K. What is substance K? star A Magnesium carbonate B Boron oxide C Silver chloride T4 Chapter 8.4 Composite Materials and Its Importance
36 Production of swimsuits made from the synthetic polymer neoprene allows the swimsuit to stretch five to six times of its original length. Which of the following statement best describe the properties of neoprene? star A Very elastic B Highly resistant towards abrasion C Resistant towards high heat D Resistant towards oil and solvent T5 Chapter 4.3 Synthetic Rubber
37 Diagram 12 shows statement from an article. ### HYDROGEN-POWERED TRAMS DEVELOPED IN CHINA > In an effort to reduce the release of large and dangerous greenhouse gases, the SIFANG company has created the first hydrogen-powered tram in China. The tram operates entirely on hydrogen fuel cells. When 1 mole of hydrogen is burned, the heat released is 282 kJ. The highest speed is only 70 kilometers per hour and is used in urban areas only. The tram is designed to carry 380 passengers. What is the energy released when 50 g of hydrogen is burned? [Relative atomic mass: H = 1] star A 7050 J B 70500 J C 7050 kJ D 70500 kJ T4 Chapter 3.2 Mole Concept T5 Chapter 3.3 Application of Exothermic and Endothermic Reactions in Daily Life
38 Diagram 13 shows the label on a box of a sugar-free pineapple cake. ### Pineapple cake [sugar-free] > Ingredients: > Wheat flour, eggs, margarine, sorbitol, ethyl butanoate, ascorbic acid, pectin, sunset yellow colouring, salt. Which of the following ingredients gives the pineapple flavour? star A Pectin B Sorbitol C Ascorbic acid D Ethyl butanoate T5 Chapter 5.3 Food Additives
39 A student conduct a laboratory activity to build a simple battery using solid naphthalene, C10H8. After complete circuit is assembled, the voltmeter needle is not deflected. Which of the following statements is the step that the student should take so that the voltmeter needle is deflected? star A Dissolve naphthalene in distilled water B Heat solid naphthalene until melted C Replace solid naphthalene with solid magnesium chloride D Replace solid naphthalene with magnesium chloride solution T4 Chapter 5.7 Properties of Ionic Compounds and Covalent Compounds
40 Diagram 14 shows a dialogue between a teacher and her student, Anis in a laboratory. | Anis | : Teacher, how to identify the cation in this X nitrate solution? | | Teacher | If you add sodium hydroxide solution, white precipitate dissolved in excess sodium hydroxide solution but when X nitrate solution is added to potassium iodide solution, yellow precipitate is produced | | Anis | : Thanks teacher. | Based on Diagram 14, what is solution X nitrate? star A Calcium nitrate B Zinc nitrate C Magnesium nitrate D Lead (II) nitrate T4 Chapter 6.11 Qualitative Analysis