Question

A solid sample of a compound and a liquid sample of the same compound are each tested for electrical conductivity. which test conclusion indicates that the compound is ionic?

Answer 1

If these are you choices: 
(1)  Both the solid and the liquid are good conductors.

(2)  Both the solid and the liquid are poor conductors.

(3)  The solid is a good conductor, and the liquid is a poor conductor.

(4)  The solid is a poor conductor, and the liquid is a good conductor. 

 Then the answer is number 4. This is because ionic compound conducts electricity when it is dissolved in water.