Question

Compare the physical properties of metals and non-metals in general with reference to electrical conductivity.

• A. Both are good conductor
• B. Both are poor conductor
• C. Metals are poor conductor while non metals are good conductor
• D. Metals are good conductor while non metals are poor conductor

Answer 1

The correct option is D Metals are good conductor while non metals are poor conductor

Conduction: Metals are good conductors because they have free electrons. Silver and copper are the two best conductors of heat and electricity. Lead is the poorest conductor of heat. Bismuth, mercury and iron are also poor conductors.
Non-metals are poor conductors of heat and electricity.