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Subject :NSO    Class : Class 7

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.

Ans 1:

Class : Class 8
Water does not allow the heat to pass through to the wax. it proves that water is a bad conductor of heat.

Ans 2:

Class : Class 8

Ans 3:

Class : Class 9

Ans 4:

Class : Class 9

Ans 5:

Class : Class 8

Ans 6:

Class : Class 7
No solution is provided for this question.

Ans 7:

Class : Class 7
ans is B that water is a poor conductor of heat

Ans 8:

Class : Class 7

Ans 9:

Class : Class 8

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