An experiment was performed to test the electrical conductivity of some substances as shown in figure below:

The soluton of which of the following will not conduct electricity?

Options

A. Sodium chloride
B. Magnesium Iodide
C. Alcohol
D. Calcium oxide

Answer

C

Explanation

Explanation, Ionic compounds conduct electricity in molten state or in solution as the ions are then free to move. As sodium chloride, magnesium iodide and calcium oxide are ionic compounds, they will conduct electricit in solution. But alcohol will not conduct electricity as it is not an ionic compound and does not dissociate into ions.