Question

Which of the following is/are poor conductors of heat?

• A. Silver
• B. Copper
• C. Bismuth
• D. Stainless steel

Answer 1

Answer: (C), (D)

The correct options are
C

Bismuth

D

Stainless steel

For a substance to be a good conductor of heat, it has to have many free electrons that can transfer heat to each other by “bouncing and bumping” against each other. Usually, metals have a lot of free electrons but there are still some metals which are poor conductors of heat due to a relatively less concentration of these elcetrons.

The poorest conductor of heat among metals is Bismuth. Stainless steel is another one that is a poor conductor of heat, and you use this often in everyday life!