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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.
Kerosene contracts on heating.
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Water is a bad conductor of heat.
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_________ determines the degree of hotness or coldness of a body.
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Metals are _______ of heat.
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Still air is an __________ of heat.
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Black and dull surfaces are ______ of heat.
Describe an experiment to show that air expands on heating.
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.
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