Advertisements
Advertisements
प्रश्न
Why are quilts filled with fluffy cotton?
उत्तर
Quilts are filled with fluffy cotton. Air is trapped in the fine pores of cotton. Cotton and air are the insulators of heat. They check heat from our body to escape and thus keep us warm.
The newly made quilts are warmer than the old ones because in the old quilts, there is no air trapped in the cotton.
APPEARS IN
संबंधित प्रश्न
Write true or false for a given statement.
Heat flows from a body at a high temperature to a body at a low temperature when they are kept in contact.
Write true or false for a given statement.
Equal volumes of different liquids expand by different amounts when they are heated to the same rise in temperature.
Write true or false for a given statement.
Water is a bad conductor of heat.
Why do telephone wires sag in summer ?
Name a solid which is a good conductor of heat.
Why do we use cooking utensils made up of copper.
Why is a ventilator provided in a room?
What are the land and sea breezes? Explain their formation.
Why do we prefer to wear white or light coloured clothes in summer and black or dark coloured clothes in winter ?
When we heat them the force of attraction between the molecules decreases and the ice cubes become ______.
