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JAMB Biology 1983 Question 40

Question 40

Ecosystem and Ecological Factors

Which of the following instruments is used for determining turbidity of water?

  1. A.Thermometer
  2. B.Secchi disc
  3. C.Rain gauge
  4. D.Hygrometer
  5. E.Wind vane.
Show the answer and explanation

Answer: B (Secchi disc)

Explanation

A Secchi disc is lowered into water until it disappears from view; the depth tells how cloudy (turbid) the water is.