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प्रश्न
How can a glass stopper jammed in the neck of a bottle be removed?
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उत्तर
We should heat the neck of the bottle because due to heating the neck will expand and loosen the stopper stuck in the neck. In this way, we can easily remove the stopper from the bottle.
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संबंधित प्रश्न
State the three units of temperature.
What is the Kelvin scale of temperature?
Name the one common unit of temperature. Write their symbols also.
Why does a piece of ice when touched with a hand, appear cool? Explain.
A deep pond of water has its top layer frozen during winter. State the expected temperature of water layer (i) Just in contact with ice and (ii) At the bottom of pond.
What do you mean by heat?
Write down the SI unit of latent heat.
Name the substance which contracts when heated from 00C to 40C.
