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प्रश्न
Select good and bad conductors of heat from the following:
copper, mercury, wood, iron, air, saw-dust, cardboard, silver, plastic, wool.
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उत्तर
Good conductors — Mercury, copper, silver, iron.
Bad conductors — Wood, air, saw dust, plastic, wool, cardboard.
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संबंधित प्रश्न
Write true or false for a given statement.
Solids expand the least and gases expand the most on being heated.
Fill in the blank
Gases expand _______ than the liquids.
Fill in the blank
Still air is an __________ of heat.
One end of a steel girder in a bridge is not fixed, but is kept on roliers. Give the reason.
Describe one experiment to show that liquids expand on heating.
State one application of thermal expansion of liquids.
What are the good and bad conductors of heat ? Give two examples of each.
In ice cubes, the force of attraction between the water molecules is ______.
Mention the factors affecting the flow of heat.
______ is greater for liquids than solids and it is maximum in gases.
