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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
Black and dull surfaces are ______ of heat.
Why are gaps left between successive rails on a railway track ?
A glass stopper stuck in the neck of a bottle can be removed by pouring hot water on the neck of the bottle. Explain why ?
Why is a cement floor laid in small pieces with gaps in between?
Name a solid which is a good conductor of heat.
Why do we use cooking utensils made up of copper.
In summer, ice is kept wrapped in a gunny bag. Explain the reason.
Why do we prefer to wear white or light coloured clothes in summer and black or dark coloured clothes in winter ?
______ is the only matter on the Earth that can be found naturally in all three states.
Explain the following effects of heat.
Expansion
