Advertisements
Advertisements
प्रश्न
Explain why in hot summer days water remains cool in earthen pots.
Advertisements
उत्तर
Water seeps out through the pores in the earthen pot and it evaporates. The latent heat required for evaporation is taken, from the water inside the~pot which gets cooled.
APPEARS IN
संबंधित प्रश्न
Why are we able to sip hot tea or milk faster from a saucer than a cup?
Explain with an example to demonstrates that when a liquid evaporates, it takes heat from its surroundings.
If the back of your hand is moistened with alcohol, you will find that it rapidly becomes dry. Why is it that while it is drying, your hand feels cool ?
How does the water kept in an earthen pot (matka) become cold during summer ?
Which of the following are also considered to be the states of matter ?
- Plasma
- Platelets
- BEC
- BHC
During summer days, water kept in an earthen pot (pitcher) becomes cool because of the phenomenon of :
The amount of vapour in 1 cu.m. of air shows the ______.
Look at Fig. 1.3 and suggest in which of the vessels A,B, C or D the rate of evaporation will be the highest? Explain.
The rate of evaporation is more when the surface area is greater.
When lemon juice is mixed with soda water, they produce brisk effervescence.
