The Poorest Conductor of Heat Among the Following is

1. Copper
2. Lead
3. Mercury
4. Zinc
5. None of the above/More than One

Answer: Option B, Lead

The poorest conductor of heat among the above is Lead. Mercury is a poor conductor while Lead is the poorest. Copper and Zinc are good conductors of heat. 

• Conductors are those materials that are good conductors of heat. They have a number of free electrons to conduct heat and electricity.
• The materials that do not allow electricity to pass through them are termed insulators.