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प्रश्न
Select the correct alternative
Which of the statement is correct
पर्याय
Iron rims are cooled before they are placed on cartwheels
A glass stopper gets tight 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
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उत्तर
A little space is left between two rails on a railway track
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संबंधित प्रश्न
Fill in the blank
_________ determines the degree of hotness or coldness of a body.
Fill in the blank
The temperature of boiling water is _______
Name the instrument used to measure the temperature of a body.
One end of a steel girder in a bridge is not fixed, but is kept on roliers. Give the reason.
Why do we use cooking utensils made up of copper.
What are the land and sea breezes? Explain their formation.
During day time, air blows from ______ to ______.
When we heat them the force of attraction between the molecules decreases and the ice cubes become ______.
______ is greater for liquids than solids and it is maximum in gases.
Explain the following effects of heat.
Expansion
