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प्रश्न
The correct statement is
विकल्प
Iron rims are cooled before they are placed on the cart wheels.
A glass stopper gets tighten on warming the neck of the bottle.
Telephone wires sag in winter but become tight in summer.
A little space is left between two rails on a railway track.
उत्तर
A little space is left between two rails on a railway track.
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संबंधित प्रश्न
Solids expand the least and gases expand the most on being heated.
A mercury thermometer makes use of the property of expansion of liquids on heating.
Name the three states of matter and distinguish them on the basis of their (i) volume, and (ii) shape
Distinguish between liquid and vapour (or gas) states of matter on the basis of the following factors
- Arrangement of molecules
- Inter-molecular separation
- Inter-molecular force, and
- Kinetic energy of molecules
Why does bubbles appear when a liquid is heated?
Give two examples of the substances which expand on heating.
Describe an experiment to demonstrate the thermal expansion in solids.
Describe an experiment to show that liquids expand on heating.
What do you mean by anomalous behaviour of water?
How does the density of a substance (solid, liquid and gas) change on heating?
