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Question

A child staying in a coastal region tests the drinking water and also the seawater with his tester. He finds that the compass needle deflects more in the case of seawater. Can you explain the reason?


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Solution

  1. Water is a molecule that contains two hydrogens and one oxygen atom which can conduct electricity.
  2. Because of presence of different kinds of impurities as well as ions. The drinking water comprises less dissolve salt as compared to seawater, which has more dissolved salts in it.
  3. Electricity can quickly transfer through seawater than drinking water. The amount of diffused salt causes the needle of the compass deflect. Seawater is a greater conductor than drinking water.
  4. Salinity of seawater means amount of salt which is dissolved in a water body. It is the most important factor that determines many aspects of water.

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