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CTET PAPER II 2018 · PYQ · Physics / Electricity · medium

Sarika took distilled water in a bottle and tried to find whether it conducts electricity or not. What is she likely to find?

  1. A.It is good conductor of electricity.
  2. B.It is an insulator.
  3. C.It is poor conductor of electricity.✓ Correct
  4. D.None of the above

Explanation

Distilled water is a poor conductor of electricity because it lacks dissolved ions (salts and minerals) that are responsible for conducting electric current in water. Pure water has very few ions, making it a poor conductor. However, it is not a perfect insulator either, since some water molecules do ionize slightly. Tap water, in contrast, conducts electricity well due to dissolved salts.
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