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प्रश्न
Fill in the blank
Still air is an __________ of heat.
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उत्तर
Still air is an insulator of heat.
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संबंधित प्रश्न
Fill in the blank
In a thermometer, the commonly used liquid is _______
Fill in the blank
The temperature of boiling water is _______
What do you understand by thermal expansion of a substance ?
Why are gaps left between successive rails on a railway track ?
Describe one experiment to show that liquids expand on heating.
Select good and bad conductors of heat from the following:
copper, mercury, wood, iron, air, saw-dust, cardboard, silver, plastic, wool.
Why is a tea kettle provided with an ebonite handle?
During day time, air blows from ______ to ______.
In ice cubes, the force of attraction between the water molecules is ______.
Explain the following effects of heat.
Expansion
