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प्रश्न
Fill in the blank
Metals are _______ of heat.
उत्तर
Metals are conductors of heat.
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संबंधित प्रश्न
Write true or false for a given statement.
Heat flows from a body at a high temperature to a body at a low temperature when they are kept in contact.
Write true or false for a given statement.
Telephone wires are kept tight between the two poles in summer.
Write true or false for a given statement.
Equal volumes of different liquids expand by different amounts when they are heated to the same rise in temperature.
Fill in the blank
Black and dull surfaces are ______ of heat.
Why do telephone wires sag in summer ?
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 ?
State which expands more, when heated to the same temperature : solid, liquid or gas ?
Name a solid which is a good conductor of heat.
Select good and bad conductors of heat from the following:
copper, mercury, wood, iron, air, saw-dust, cardboard, silver, plastic, wool.
During day time, air blows from______ to______
