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CBSE Class 8 Solved MCQs on Metals and Non Metals, Science

1. The property of metals by which they can be beaten in to thin sheets is called- a. malleability b. Ductility c. conduction d. Expansion Ans . 1. (a) 2. Which one of the following is metal? a. C b. N c. Na d. O Ans . 2. (c) 3. Which one of the following is non metal? a. Zn b. Al c. Fe d. N Ans . 3. (d) 4. All materials shown property of malleability expect a. Iron b. Graphite c. Aluminium d. Silver Ans . 4. (b) 5. Which one of the following is a good conductor of electricity? a. Iron b. Plastic c. Wood d. Glass Ans . 5. (a) 6. The property of metal by which it can be drawn into wires is called a. Conductivity b. malleability c. Ductility d. Decorating Ans . 6. (c) 7. The metals that produce ringing sounds, are said to be- a. malleable b. sonorous c. Lustrous d. hard Ans . 7. (b) 8. Which metal is found in liquid state t room temperature? a. Fe b. Zn c. Hg d. Al Ans . 8. (c) 9. The solution of ash of magnesium ribbon is- a. Acidic b. Basic c. Neutral d. All of these Ans . 9. (b) 10. What is the product when sulphur reacts with oxygen? a. Sulphuric acid b. Sulphur trioxide c. Sulphurous acid d. Sulphur dioxide Ans . 10. (d) 11. When sulphur dioxide is dissolve in water then- a. Sulphur is formed b. Sulphur trioxide is formed c. Sulphuric acid is formed d. Sulphurous acid is formed. Ans . 11. (c) 12. What is the chemical formula of sulphurous acid- a. H2SO4 b. SO2 c. SO3 d. H2SO3 Ans . 12. (d) 13. The sulphuric acid turns blue litmus paper into- a. Red b. Green c. Yellow d. Dark blue Ans . 13. (a) 14. Oxides of non metals are _______ in nature a. Basic b. Acidic c. Neutral d. All of these Ans . 14. (b) 15. Sodium metal is stored in- a. Water b. Alcohol c. Kerosene d. Ether Ans . 15. (c) 16. Which one of the following metal reacts vigorously with oxygen and water? a. Sodium b. Potassium c. Calcium d. Magnesium Ans . 16. (a) 17. Which metal is present in Calcium Hydroxide? a. C b. O c. Ca d. H Ans . 17. (c) 18. Which non-metal catches fire if the exposed to air a. Sodium b. Phosphorous c. Calcium d. Uranium Ans . 18. (b) 19. What is the chemical formula of copper sulphate? a. CuSO4 b. CuCO3 c. CuCl2 d. CuO Ans . 19. (b) 20. Which gas are produced when metal react with acids a. Oxygen b. Nitrogen c. Hydrogen d. Carbon dioxide Ans . 20 (c) 21. Which one of the following does not react with acids? a. Cu b. Ni c. Cr d. O Ans . 21. (d) 22. Which one of the following gas burns with the “pop” sound? a. Oxygen b. Hydrogen c. Chlorine d. Hydrogen sulphide Ans . 22. (b) 23. Which of the following can be beaten in to thin sheets? a. Zinc b.Phosphorus c. Sulphur d. Oxygen Ans . 23. (a) 24. Which of the following statements are correct? a. All metals are ductile b All non metals are ductile c Generally metals are ductile d.some metals are ductile Ans . 24. (c) 25. What happens when dilute sulphuric acid is poured on a copper plate? a. Copper sulphate formed b. Zinc sulphate formed c. Copper chloride formed d. Zinc sulphate formed. Ans . 25. (a) 26. On burning metals react with oxygen to produce- a. Metal hydroxide b. Metal chloride c. Metal oxide d. Metal sulphate Ans . 26. (c) 27. Which gas produced by piece of burning charcoal? a. CO2 b. CO c. H2S d. O2 Ans . 27. (b) 28. Which non metal is essential for our life and inhale during breathing? a. H b. O c. C d. N Ans . 28. (b) 29. Non metals used in- a. Aeroplanes b. making machinery c. Water boilers d. Fertilisers Ans . 29. (d) 30. Which one of the following is applied on wounds as an antiseptic? a. Metals b. Non metals c. Metalloids d. All of these Ans . 30. (b) 31. Which metal is found in plants? a. Fe b. Cr c. Mg d.CO Ans . 31. (c) 32. Copper sulphate (CuSO4) possesses a. Red colour b. Blue colour c. Green colour d. Yellow colour Ans . 32. (b) 33. Which one of the following are very reactive non metals a. Sodium b. Potassium c. Carbon d. Phosphorous Ans . 33. (d) 34. Which one of the following is the good conducter of electricity? a. Iron rod b. Sulphur c. Coal piece d. Wood Ans . 34. (a) 35. Which material show shiny appearance? a. Coal b. Sulphur c. Aluminium d. Carbon Ans . 35. (c) 36. Which material is hard in nature? a. Iron b. Coal c. Oxygen d. Wood Ans . 36. (a) 37. Gold is used in- a. Thermometers b. Fuel c. Jewellery d. Machinery Ans . 37. (c) 38. Which one of the following metal is used thermometers? a. Copper b. Mercury c. Aluminium d. Iron Ans . 38. (b) 39. Which one of the following can’t be drawn into wires? a. Fe b. Al c. Cu d. Coal Ans . 39. (d) 40. Which substance is present in fuel? a. Copper b. Iron c. Gold d. Carbon Ans . 40. (d) 41. Zinc replaces copper from- a. Zinc sulphate b. Copper sulphate c. sulphuric acid d. Copper oxide Ans . 41. (b) 42. Metallic oxides are- a. Acidic is nature b. Neutral c. Basic in nature d. Either acidic or basic Ans . 42. (c) 43. Aluminium foil used for wrapping- a. Food b. Clothes c. Plastic d. Wires Ans . 43. (a) 44. Which one of the following is used for decorating sweets? a. Aluminium foil b. Copper foil c. Silver foil d. All of these Ans . 44. (c) 45. Which one of the following enhances the growth of plants? a. Industrial gadgets b. Fertilisers c. Automobiles d. Water boilers Ans . 45. (b) 46. Which one of the following is in crackers? a. metals b. Semi metals c. Non-metal d. All of these Ans . 46. (c) 47. Hydrogen gas produce when metal react with- a. Acid b. Base c. Salt d. Both acid & base Ans . 47. (b) 48. Which of the following can’t be beaten into sheets? a. Zinc b. Iron c. Aluminium d. Sulphur Ans . 48. (d) 49. Heat conduction is the property of a. Non-metal b. Metal c. Metalloids d. All of these Ans . 49. (b) 50. Moist air is the combination of- a. H2O+CO2+O2 b. H2O+ CO+O2 c. H2O+CO2+H2 d. H2O+O2+H2 Ans . 50. (a)