Question

Bad conductor of electricity is:

A

B

C

D

Medium

Solution

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Correct option is
A

Hydrofluoric acid,  or is bad conductor of electricity.
  bond is much stronger and hence,  is a weak acid. It dissociates to a small extent. Hence, ions are not present for electrical conductivity. On the other hand,  , and  are strong acids and completely dissociate and provide ions for electrical conductivity. Hence, they are good conductors of electricity.

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