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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.
Water is a bad conductor of heat.
Fill in the blank
On heating a body, its temperature _______.
Fill in the blank
Metals are _______ of heat.
An empty glass bottle is fitted with a narrow tube at its mouth. The open end of the tube is kept in a beaker containing water. When the bottle is heated, bubbles of air are seen escaping into the water. Explain the reason.
Name a solid which is a good conductor of heat.
Why is an oven made of double walls with the space in between filled with cork ?
Why are quilts filled with fluffy cotton?
What are the effects of heat?
______ is greater for liquids than solids and it is maximum in gases.
When heat energy is added to a substance, the kinetic energy of its particles ______ and so the particles move at a higher speed.
