question_answer

In an experiment shown in figure, the water near the top of the tube starts boiling but the wax in the test tube does not melt completely. What do you conclude?                          

A) Convection cannot occur in water.

B) Water is a poor conductor of heat.

C) Wax is a bad radiator of heat.

D) Heat is not reaching at the bottom of the test tube as tube is made of insulator.