Question

How will you show that water is a poor conductor of heat ?

Answer 1

Let us take some pure water in a test tube and dip a piece of wax in it after wrapping it in wire Then we hold the test tube in an inclined position and start heating water in the upper part of the tube we will observe that wax does not melt even when the upper part of water starts boiling Thus we can conclude that water being a poor conductor of heat is unable to melt the wax