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

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BIOLOGY

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

A. thermometer

B. secchi disc

C. rain gauge

D. hygrometer

QUICK ANSWER…

B

DETAILS…  

Secchi disc is a white and black circular disc invented and named after a scientist named Angelo Secchi, it is used to determine the level of clarity of water.

Turbidity is a measure of the level of clarity or transparency of a given water sample. Low turbidity means high clarity.

Now for the right answer to the above question:

  1. A is not the right answer. thermometer measures temperature and not turbidity.
  2. B is correct. Secchi disk is used to measure the turbidity of water.
  3. C is incorrect. rain gauge measures the amount of rainfall.
  4. D is incorrect. hygrometer measures the amount of water vapor in the atmosphere.

KEY-POINTS…

You may please note this/these:

  • Turbidity simply means the clarity or transparency of water.
  • Mud water will have a much higher turbidity than distilled or spring water.
  • This is measured with a white and black disc called Secchi disk.

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/ culled from 2020 JAMB-UTME biology past question 6 /

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