Metals and Non-Metals_ MCQ PracticeBy admin / August 15, 2025 Chemistry MCQ Quiz Combined Chemistry Quiz Four Sets of 20 Multiple-Choice Questions Set 1 1. What is the process of coating iron with a layer of zinc to prevent rusting called? a) Electroplating b) Galvanization c) Anodising d) Alloying 2. Which of the following is a characteristic of a chemical reaction? a) Change in state b) Change in color c) Evolution of gas d) All of the above 3. An example of a double displacement reaction is: a) $Zn + 2HCl \rightarrow ZnCl_2 + H_2$ b) $2H_2 + O_2 \rightarrow 2H_2O$ c) $AgNO_3 + NaCl \rightarrow AgCl + NaNO_3$ d) $CaCO_3 \rightarrow CaO + CO_2$ 4. Which of the following metals is most reactive? a) Copper b) Gold c) Sodium d) Iron 5. Why are gold and platinum used to make jewelry? a) They are very hard. b) They are less reactive and do not corrode easily. c) They are good conductors of electricity. d) They have high melting points. 6. The tarnishing of silver is due to the formation of: a) Silver oxide b) Silver sulfide c) Silver carbonate d) Silver chloride 7. Which of the following is a characteristic of a non-metal? a) Lustrous b) Ductile c) Brittle d) Sonorous 8. What is the process of a substance gaining oxygen or losing hydrogen called? a) Reduction b) Oxidation c) Displacement d) Combination 9. The reaction between a metal oxide and water forms a: a) Base b) Acid c) Salt d) Metal 10. Which gas is commonly used to flush oil and fat-containing food items? a) Oxygen b) Hydrogen c) Nitrogen d) Carbon dioxide 11. A decomposition reaction requires energy in the form of: a) Heat b) Light c) Electricity d) All of the above 12. What happens to the weight of a gold bangle when it is dipped in Aqua regia? a) Increases b) Decreases c) Stays the same d) The bangle is completely destroyed 13. Which of the following metals reacts with steam but not with cold or hot water? a) Sodium b) Iron c) Calcium d) Copper 14. When a metal reacts with a dilute acid, it produces a metal salt and what gas? a) Oxygen b) Carbon dioxide c) Hydrogen d) Chlorine 15. The black layer on a heated copper vessel is due to the formation of: a) Copper sulfide b) Copper hydroxide c) Copper oxide d) Copper chloride 16. The most abundant metal in the earth’s crust is: a) Iron b) Aluminium c) Calcium d) Sodium 17. Which of the following non-metals is a liquid at room temperature? a) Iodine b) Carbon c) Bromine d) Chlorine 18. A precipitation reaction produces a: a) Soluble salt b) Precipitate (insoluble substance) c) Gas d) Water 19. The reaction $C + O_2 \rightarrow CO_2$ is an example of a: a) Decomposition reaction b) Combination reaction c) Displacement reaction d) Double displacement reaction 20. Which of the following is a redox reaction? a) $NaOH + HCl \rightarrow NaCl + H_2O$ b) $2Na + Cl_2 \rightarrow 2NaCl$ c) $CaCO_3 \rightarrow CaO + CO_2$ d) $AgNO_3 + KCl \rightarrow AgCl + KNO_3$ Set 2 21. The chemical formula for rust is: a) $Fe_2O_3$ b) $FeO$ c) $Fe_2O_3 \cdot xH_2O$ d) $Fe_3O_4$ 22. Which of the following metals reacts with cold water to form hydrogen gas? a) Iron b) Zinc c) Copper d) Calcium 23. When a non-metal oxide dissolves in water, the resulting solution is: a) Basic b) Acidic c) Neutral d) Amphoteric 24. What is the common name for the reaction where silver nitrate solution reacts with sodium chloride solution to form a white precipitate? a) Combination b) Displacement c) Precipitation d) Decomposition 25. Which of the following is a reduction reaction? a) $2Cu + O_2 \rightarrow 2CuO$ b) $CuO + H_2 \rightarrow Cu + H_2O$ c) $C + O_2 \rightarrow CO_2$ d) $2Mg + O_2 \rightarrow 2MgO$ 26. Which of the following is not a physical property of metals? a) High melting point b) Good conductor of heat c) Reactivity with acids d) Ductility 27. The process of converting sulphide ores to oxides by heating them strongly in the presence of excess air is called: a) Roasting b) Calcination c) Reduction d) Electrolysis 28. Which of the following is a decomposition reaction that requires heat? a) $2H_2O(l) \xrightarrow{electricity} 2H_2(g) + O_2(g)$ b) $2AgBr(s) \xrightarrow{sunlight} 2Ag(s) + Br_2(g)$ c) $CaCO_3(s) \xrightarrow{heat} CaO(s) + CO_2(g)$ d) $Fe + CuSO_4 \rightarrow FeSO_4 + Cu$ 29. When an iron nail is placed in a copper sulphate solution, the solution turns: a) Blue b) Green c) Red d) Black 30. Why is aluminium used to make utensils despite being a highly reactive metal? a) It forms a hard, protective oxide layer. b) It is cheap. c) It does not react with food. d) It has a low melting point. 31. What is the process that prevents oil and fat-containing food from becoming rancid? a) Hydrogenation b) Oxidation c) Reduction d) Corrosion 32. Which of the following metals is obtained by electrolysis of its molten chloride? a) Iron b) Aluminium c) Sodium d) Copper 33. What is the phenomenon of a substance absorbing light to initiate a chemical reaction? a) Photolysis b) Thermolysis c) Electrolysis d) Hydrolysis 34. Which of the following is not a displacement reaction? a) $Zn + H_2SO_4 \rightarrow ZnSO_4 + H_2$ b) $2AgNO_3 + Cu \rightarrow Cu(NO_3)_2 + 2Ag$ c) $Fe + CuSO_4 \rightarrow FeSO_4 + Cu$ d) $2H_2 + O_2 \rightarrow 2H_2O$ 35. What is the process of converting a metal into a stable compound like an oxide, sulphide, or carbonate in the presence of air or moisture? a) Rusting b) Corrosion c) Rancidity d) Oxidation 36. An element that is shiny, malleable, and ductile is likely a: a) Metal b) Non-metal c) Metalloid d) Noble gas 37. Which metal is an exception to the rule that all metals are hard and solid? a) Iron b) Sodium c) Calcium d) Lead 38. Why are food items containing oil and fat flushed with nitrogen? a) To make them crispy. b) To prevent them from reacting with oxygen. c) To give them a unique flavor. d) To make them healthier. 39. Which of the following is an example of an endothermic reaction? a) $CaO + H_2O \rightarrow Ca(OH)_2$ b) Respiration c) Photosynthesis d) Combustion of methane 40. What is the process of extracting a metal from its ore called? a) Metallurgy b) Corrosion c) Electroplating d) Galvanization Set 3 41. Which of the following is an example of a combination reaction? a) $2H_2O_2 \rightarrow 2H_2O + O_2$ b) $2Na + Cl_2 \rightarrow 2NaCl$ c) $Zn + 2HCl \rightarrow ZnCl_2 + H_2$ d) $BaCl_2 + Na_2SO_4 \rightarrow BaSO_4 + 2NaCl$ 42. What is the property of a metal that makes it shine? a) Ductility b) Malleability c) Sonority d) Lustre 43. Which of the following is an example of a precipitate? a) Common salt (NaCl) b) Silver chloride (AgCl) c) Sodium nitrate ($NaNO_3$) d) Copper sulphate ($CuSO_4$) 44. Which non-metal is used to make pencils and is a good conductor of electricity? a) Diamond b) Sulphur c) Graphite d) Iodine 45. A reaction that releases heat and light is known as a(n): a) Endothermic reaction b) Exothermic reaction c) Decomposition reaction d) Displacement reaction 46. Which of the following is a balanced chemical equation? a) $H_2 + O_2 \rightarrow H_2O$ b) $Fe + H_2O \rightarrow Fe_3O_4 + H_2$ c) $2Fe + 3H_2O \rightarrow Fe_2O_3 + 3H_2$ d) $2H_2 + O_2 \rightarrow 2H_2O$ 47. What happens when a piece of zinc metal is placed in a copper sulphate solution? a) No reaction occurs. b) Copper metal is deposited on the zinc. c) Hydrogen gas is evolved. d) The solution becomes colorless. 48. The reaction of copper with oxygen forms a compound with the formula: a) $CuO_2$ b) $Cu_2O$ c) $CuO$ d) $Cu_2O_3$ 49. What type of oxides react with both acids and bases? a) Acidic oxides b) Basic oxides c) Amphoteric oxides d) Neutral oxides 50. A chemical reaction is an exothermic reaction if: a) Heat is absorbed. b) Heat is released. c) There is no change in temperature. d) A precipitate is formed. 51. Which of the following is an example of an endothermic reaction? a) Combustion b) Respiration c) Photosynthesis d) Rusting of iron 52. The ability of a metal to be drawn into thin sheets is called: a) Ductility b) Malleability c) Sonority d) Lustre 53. What is the composition of Aqua regia? a) Concentrated nitric acid and water b) Concentrated hydrochloric acid and concentrated nitric acid in a 3:1 ratio c) Concentrated sulphuric acid and water d) Concentrated hydrochloric acid and water 54. Which of the following is a redox reaction? a) $2H_2O_2 \rightarrow 2H_2O + O_2$ b) $BaCl_2 + Na_2SO_4 \rightarrow BaSO_4 + 2NaCl$ c) $NaOH + HCl \rightarrow NaCl + H_2O$ d) $CaCO_3 \rightarrow CaO + CO_2$ 55. Which gas is produced when a metal reacts with a dilute acid? a) Oxygen b) Hydrogen c) Carbon dioxide d) Nitrogen 56. Which of the following metals is an example of an amphoteric oxide? a) Iron b) Zinc c) Copper d) Sodium 57. The process of decomposition of silver bromide in sunlight is called: a) Electrolysis b) Thermolysis c) Photolysis d) Hydrolysis 58. Which of the following is an example of a displacement reaction? a) $2H_2 + O_2 \rightarrow 2H_2O$ b) $AgNO_3 + NaCl \rightarrow AgCl + NaNO_3$ c) $Fe + CuSO_4 \rightarrow FeSO_4 + Cu$ d) $CaCO_3 \rightarrow CaO + CO_2$ 59. The sour taste of lemon and tamarind juice is due to the presence of: a) Bases b) Salts c) Acids d) Alcohols 60. What is the process of a substance losing oxygen or gaining hydrogen called? a) Oxidation b) Reduction c) Combination d) Decomposition Set 4 61. Which of the following is an example of an exothermic reaction? a) $Ba(OH)_2 + NH_4Cl$ b) Burning of magnesium ribbon c) Electrolysis of water d) Decomposition of silver chloride 62. Which of the following metals reacts with cold water violently? a) Magnesium b) Aluminium c) Sodium d) Zinc 63. What is the process of gaining an electron called? a) Oxidation b) Reduction c) Displacement d) Combination 64. An example of a non-metal that is a good conductor of heat and electricity is: a) Sulphur b) Diamond c) Graphite d) Phosphorus 65. What is the name of the process for refining a metal using an electric current? a) Smelting b) Electrolytic refining c) Calcination d) Roasting 66. The reaction $2Mg + O_2 \rightarrow 2MgO$ is an example of a: a) Decomposition reaction b) Displacement reaction c) Combination reaction d) Double displacement reaction 67. When a metal reacts with a base, it produces a metal salt and what gas? a) Oxygen b) Carbon dioxide c) Hydrogen d) Chlorine 68. The chemical name for table salt is: a) Sodium chloride b) Sodium bromide c) Calcium carbonate d) Sodium nitrate 69. What is the phenomenon of a metal reacting with air or moisture, causing it to deteriorate? a) Rancidity b) Corrosion c) Oxidation d) Reduction 70. The reaction of magnesium ribbon with oxygen is an example of a: a) Endothermic reaction b) Exothermic reaction c) Double displacement reaction d) Precipitation reaction 71. What kind of compounds are formed by the transfer of electrons from a metal to a non-metal? a) Covalent compounds b) Metallic compounds c) Ionic compounds d) Noble gases 72. The reaction of an acid with a base is called: a) Combination b) Neutralization c) Displacement d) Decomposition 73. Which of the following is a non-metal? a) Gold b) Sulphur c) Iron d) Lead 74. The most reactive metal among the following is: a) Copper b) Zinc c) Iron d) Potassium 75. What is the process of a metal losing an electron called? a) Reduction b) Oxidation c) Displacement d) Combination 76. The reaction $CuSO_4 + Fe \rightarrow FeSO_4 + Cu$ is an example of a: a) Combination reaction b) Decomposition reaction c) Displacement reaction d) Double displacement reaction 77. A chemical change has occurred if: a) Only the state of the substance changes. b) The identity of the initial substance changes. c) The substance melts. d) The substance boils. 78. What is the process of converting a carbonate ore into an oxide by heating it strongly in the absence of air? a) Roasting b) Calcination c) Reduction d) Smelting 79. Which of the following is a neutral oxide? a) $Na_2O$ b) $SO_2$ c) $CO$ d) $Al_2O_3$ 80. The process of respiration is an example of a(n): a) Endothermic reaction b) Exothermic reaction c) Combination reaction d) Displacement reaction Submit All Answers Retake Quiz Your Score Share this: Click to share on Facebook (Opens in new window) Facebook Click to share on X (Opens in new window) X
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