Which of the following Is the best conductor of heat?

The correct option is A

Silver

Good Conductors:

1. These are the substances which allow heat to quickly pass through them.
2. One such example is gold. Other conductors are silver, aluminium, iron etc. Silver is known to be the best conductor of heat
3. Alloys are also good conductors of heat, these materials contain free electrons which can transport both energy and charge through the substance.
4. Good thermal conductors are therefore also good electric conductors.

Bad Conductors:

1. Objects with low levels of thermal conductivity are usually non-conductors.
2. Non-conductors of heat are usually good insulators.
3. For example wood, paper etc.

Hence, silver is the best conductor of heat.