Question

Pure water can be made to conduct electricity by dissolving ____.
1. Vegetable oil
2. Honey
3. Common salt
4. Sugar

Answer 1

Correct Answer - Option 3 : Common salt

The Correct Answer is Common Salt.

• Pure water can be made to conduct electricity using Common Salt.
• Salt molecules contain sodium ions and chloride ions
• Ionic compounds conduct electricity because they contain charged particles called ions.
• When we dissolve the ionic solid in water or melt it, the crystal structure is broken down and ions become free to move and conduct electricity.
• Thus, an aqueous solution of an ionic compound (or a molten ionic compound) conducts electricity because there are plenty of free ions in the solution which can conduct electric current.

 

• An ion is an atom that has an electrical charge.