Advertisements
Advertisements
प्रश्न
Comment on the following statements:
Rate of evaporation of an aqueous solution decreases with increase in humidity.
उत्तर
The amount of water present in the air is known as humidity. If the water vapour in the air is already present in a large amounts, it is not able to take up more water through evaporation. Hence, the rate of evaporation of water will decrease. On a dry day, the air absorbs water more readily hence, the rate of evaporation is high on a dry day.
APPEARS IN
संबंधित प्रश्न
Why does our palm feel cold when we put some acetone or petrol or perfume on it?
A liquid can change into vapour state at all temperatures.
Explain with an example to demonstrates that when a liquid evaporates, it takes heat from its surroundings.
Give two applications of evaporation.
Why is heat energy needed to melt a solid ? What is this heat energy called ?
Which produces more severe burns : boiling water or steam ? Why ?
Which of the following are also considered to be the states of matter ?
- Plasma
- Platelets
- BEC
- BHC
The ______ of air is dependent on the temperature of air.
The amount of vapour in 1 cu.m. of air shows the ______.
The rate of evaporation ______ with rising temperature.
