Specific heat capacity of substance A is $3.8 J / gK$ , whereas the specific heat capacity of substance B is $0.4 J / gK$
(i) Which of the two is good conductor of heat?
(ii) How is one led to the above conclusion?
(iii) If substances A and B are liquid, then which one would be more useful in car radiators?

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Solution

Given that the specific heat capacities of substances A and B are $c_{A} = 3.8 J / gK$ and $c_{B} = 0.4 J / gK$ respectively.
The substance B is a good conductor of heat
.The rise in temperature will be more when the specific heat capacity is low. So, substance B is a good conductor of heat.
Substance A is more useful in car radiators. The higher the specific heat capacity longer the time takes to evaporate.

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Specific heat capacity of substance A is 3.8J/gK, whereas the specific heat capacity of substance B is 0.4J/gK(i) Which of the two is good conductor of heat?(ii) How is one led to the above conclusion?(iii) If substances A and B are liquid, then which one would be more useful in car radiators?