CBSE  /  Class 8  /  Science  /  Materials: Metals and Non-Metals

  • 1. 
    Which of the following is a liquid at room temperature?

  • Iron
  • Bromine
  • Iodine
  • Phosphorus

  • 2. 
    The most reactive metal is

  • copper
  • silver
  • potassium
  • calcium

  • 3. 
    The metal which is liquid at room temperature is

  • sodium
  • bromine
  • calcium
  • mercury

  • 4. 
    Which one of the following metals is the most ductile?

  • Aluminium
  • Copper
  • Silver
  • Gold

  • 5. 
    Which one of the following metals is the most reactive and stored in kerosene?

  • Iron
  • Gold
  • Copper
  • Potassium

  • 6. 
    Name the gas evolved when magnesium reacts with dilute hydrochloric acid

  • Chlorine
  • Oxygen
  • hydrogen
  • Nitrogen

  • 7. 
    The metal which is not corroded by air, water and acid is

  • copper
  • zinc
  • aluminium
  • gold

  • 8. 
    Metals are

  • soft and brittle
  • hard and solid
  • liquid
  • generally liquid

  • 9. 
    Materials having qualities of both metals and non-metals are

  • alloys
  • metalloids
  • noble metals
  • none of these

  • 10. 
    Which metal reacts readily with cold water?

  • Gold
  • Silver
  • Magnesium
  • Calcium
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