Evaporation - class-IX
Description: evaporation | |
Number of Questions: 42 | |
Created by: Prabha Kade | |
Tags: physics thermal physics heat and thermodynamics heat thermodynamics heat energy transfers the kinetic model of matter thermal properties of matter |
Rate of evaporation increases
Water evaporates under atmospheric pressure. Without changing the temperature, the same water is placed under partial vacuum. The rate of evaporation _________.
When the temperature of water rises, the rate of evaporation
One of the most common phenomenon related to rainfall is
From the following which are the factors affecting the rate of evaporation?
Evaporation is which type of process
If the temperature is high then what is the rate of evaporation?
What happens to the rate of evaporation when there is more exposed surface area of liquid?
Which of the following does not affect the rate of evaporation?
Why skin feels dry in an air-conditioned room?
The moving air from the hair dryer removes the molecules of liquids as soon as they escape from the surface of your hair.
Which factor of evaporation is responsible for the above example?
Choose the correct statements from the following
Water evaporates under atmospheric pressure. Without changing the temperature, the same water is placed in a partial vacuum. The rate of evaporation will
Soda bottles are made of thick glass so that they can withstand an increase in :
A fan produces a feeling of comfort because:
When the temperature of water rises, the rate of evaporation decreases. State whether true or false.
Why mercury do not evaporate at room temperature?
Evaporation is the process of changing liquid into vapour below its boiling point. State whether true or false.
A dog pants with its tongue sticking out on a hot day. Which of the following is the correct reason?
Relative humidity is the percentage of the
The molecules of liquid change into vapour when the pressure of molecules of liquid
Water in an earthen pitcher gets cooled due to
Drying up of clothes is fastest on a
Dogs hang out their tongue during summers to achieve cooling. Which phenomenon is involved in the process?
Salt is extracted from sea-water by
From below what are used to prevent pesticides, fertilizers and salt from agricultural wastewater from contaminating the water bodies they flow into?
To produce salt from sea water, which phenomena is used
When we apply paint in our house, it dries out after some while. This happens due to what?
Splashes dry up at the edges of puddle due to what?
When we dry our wet clothes in sun in a line then which phenomena applies to make them dry?
In our daily chores when we mop our house floor then it becomes dry after some time. Which phenomena applies here?
What is not true about evaporation?
Statement-1
Evaporation takes place from the surface of a liquid.
Statement-2
The molecules at the surface have less attractive energy than those inside the liquid.
Which of the following statement is wrong ?