Advertisements
Advertisements
प्रश्न
Explain why the water pipes are covered with cotton during very cold weather.
Advertisements
उत्तर
During very cold weather, the water pipes are covered with cotton. The cotton has air trapped in its fine pores. The cotton and air are the insulators of heat. They do not pass heat from water inside the pipes to the outside atmosphere. Thus, cotton prevents the water in the pipes from freezing.
APPEARS IN
संबंधित प्रश्न
Write true or false for a given statement.
A mercury thermometer makes use of the property of the expansion of liquids on heating.
Fill in the blank
Still air is an __________ of heat.
Fill in the blank
Black and dull surfaces are ______ of heat.
Select the correct alternative
Which of the statement is correct
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.
Why is an oven made of double walls with the space in between filled with cork ?
______ is the only matter on the Earth that can be found naturally in all three states.
Mention the factors affecting the flow of heat.
