Mrc Unit 2 Chemistry Water Stage 2

5 Questions | Attempts: 53

Mrc Unit 2 Chemistry Water Stage 2 - Quiz


Questions and Answers
  • 1. 
    What are chemical contaminants?
    • A. 

      Elements of compounds that are found in drinking water

    • B. 

      Fertiliser pollutants that are found in ground water

    • C. 

      Elements or compounds that may be harmful if consumed in drinking water

  • 2. 
    Why are Heavy metals dangerous in drinking water?
    • A. 

      They are toxins that can affect the nerves that control breathing

    • B. 

      They are toxins that affect the ability to digest specific amino acids in foods

    • C. 

      They are toxins cause changes in the Brain that are irreversible

  • 3. 
    What is salinity?
    • A. 

      The amount of Magnesium and Sodium ions found in water

    • B. 

      The amount of Sodium Chloride found in water

    • C. 

      The amount of ionic compounds found in water

  • 4. 
    Where do salts found in the water system originate from?
    • A. 

      Dissolving mineral deposits

    • B. 

      From oceans evaporating and transport of ionic salts in atmospheric water vapour

    • C. 

      From the decomposition of organic matter such as animals and plant life

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