Question
To prevent -(1) loss,you would use -(2)material. 1: heat; 2: a conducting 1: heat; 2: an insulating 1: mass; 2: a conducting 1: mass; 2: an insulating
Answer
4.1
(221 Votes)
Sophia
Veteran · Tutor for 11 years
Answer
B
Explanation
In this question, we want to prevent some form of loss, either heat or mass, by using a suitable material. If we want to prevent heat loss, we would use insulating material since insulators reduce the transfer of heat. On the other hand, conductors do the opposite - they facilitate the exchange of heat. Therefore, for preventing heat loss we do not use a conducting material. So option 3 doesn't meet. Losing mass isn't prevented by using a conducting or insulating material. Hence, this draws us to option 2 where "a conducting" material is replaced with "an insulating" material.