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ICSE Class 9 Answered

Prove by an experiment that air is a bad conductor of heat.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer

Take a hard glass test-tube and place in it small amount of wax.  Set up the apparatus as shown in the diagram.  Heat the test-tube near the mouth.  In few miniutes, the cork blows out, but wax does not melt.  Thus, experiment proves that air is a bad conductor of heat.

Answered by | 04 Jun, 2014, 03:23: PM

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