Discussion
Sarika took distilled water in a bottle and tried to find whether it conducts electricity or not. What is she likely to find?
Answer: C
She is likely to find that distilled water is a poor conductor of electricity.
Water conducts electricity because of the salts dissolved in it, which provide ions. Distilled water is almost free of dissolved salts, so very few ions are present and very little current flows; with a simple bulb tester the bulb does not glow. Adding a pinch of salt makes it conduct well.
It is therefore not a good conductor. Calling it an insulator overstates the case, since even pure water has a very small number of ions, so the key treats it as a poor conductor.
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