Observe the following table regarding the values of specific heat of substances and answer the following questions:
i) Which material is suitable as the base of cooking vessel?
ii) Why do we prefer water as a coolant?
Substance Copper Iron Aluminium Water
Specific heat ( $c a l / g^{- 9} C$ ) $0.095$ $0.115$ $0.21$ $1$

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Solution

1.Material having low specific heat value will be used as the base of cooking vessel so from small amount of heat it can spread the heat over all container through conduction. That's why we used copper as it has low specific heat value.
2.A coolant is a material that can easily reduce or regulate temperature so material having high specific constant here water will be used as coolant.

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