Cation-Exchange Capacity (CEC) Quiz
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Questions and Answers

What does Cation-exchange capacity (CEC) measure?

  • The capacity of soil to retain water
  • The number of cations that can be retained on soil particle surfaces (correct)
  • The capacity of soil to retain air
  • The number of anions that can be retained on soil particle surfaces

    • What does a high Cation-exchange capacity (CEC) indicate about soil fertility?

  • It indicates a high capacity for soil to retain nutrients in plant-available form (correct)
  • It indicates a high capacity for soil to retain air
  • It indicates a high capacity for soil to retain water
  • It indicates a low capacity for soil to retain nutrients in plant-available form

    • How is Cation-exchange capacity (CEC) defined?

  • As the amount of water that can be retained per mass of soil
  • As the amount of positive charge that can be exchanged per mass of soil (correct)
  • As the amount of air that can be retained per mass of soil
  • As the amount of negative charge that can be exchanged per mass of soil

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