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प्रश्न
Name two substances which expand on heating.
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उत्तर
Mercury and Aluminium wire.
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संबंधित प्रश्न
Write true or false for a given statement.
All solids expand by the same amount when heated to the same rise in temperature.
Fill in the blank
Metals are _______ of heat.
Fill in the blank
Black and dull surfaces are ______ of heat.
What are the good and bad conductors of heat ? Give two examples of each.
Select good and bad conductors of heat from the following:
copper, mercury, wood, iron, air, saw-dust, cardboard, silver, plastic, wool.
Why is an oven made of double walls with the space in between filled with cork ?
Why are chimneys provided over furnace in factories?
What are the effects of heat?
In ice cubes, the force of attraction between the water molecules is ______.
______ is greater for liquids than solids and it is maximum in gases.
