Question

Which of the following is a a good reflector of heat radiation a. Wood b. Plastic c. Metal d. Leather

Answer 1

The answer will be c. metal

Answer 2

According to my knowledge, the answer here is supposed to be:

c. Metal

But if the other materials also are coated with reflective coating(shiny), the too will also be good reflectors of heat.

Most metals, however, are shiny and so don't require the coating and therefore this is the correct answer.