Question

Insulators prevent the loss of heat. A company is designing a mug that will keep coffee warm for a long time. Which one of these materials would do the best?
A. Copper
B. Steel
C. Lead
D. Rubber

Answer 1

The answer is D. Rubber. Because A, B, and C are metal materials that will insulate heat without any gaps. Hope this helped!

Answer 2

Answer: Option (D) is the correct answer.

Explanation:

An insulator is a substance that resists the flow of heat and hence they are known as bad conductors of heat and electricity.

For example, rubber, plastic etc are bad conductors of heat and electricity and also known as insulators.

Out of the given options copper, steel, and lead are able to conduct heat and electricity.

Thus, we can conclude that rubber is the material that would do the best for the given situation.