Class VIII

Most liquids that conduct electricity are solutions of ____________
  1. acids
  2. bases
  3. salts
  4. all of these
Poor conductors are
  1. Plastics
  2. clothes
  3. Wood
  4. All of these
Copper wire is a
  1. Good conductor
  2. Poor conductor
  3. Both a and b
  4. None of these
An electrolyte is
  1. a metal
  2. a solution
  3. a liquid that conducts current
  4. all of above
Distilled water is
  1. Poor conductor
  2. Good conductor
  3. Both (a) and (b)
  4. none
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