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प्रश्न
Name one common substance which can be easily changed from one state to another by heating or cooling.
उत्तर
Water can be easily changed from one state to another by heating or cooling.
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संबंधित प्रश्न
What do you observe when :
water is boiled
A few substances are arranged in the increasing order of 'forces of attraction' between their particles. Which one of the following represents the correct arrangement?
Define the term 'latent heat of fusion' of a solid. How much is the latent heat of fusion of ice ?
What is sublimation ? Name two substances (other than ammonium chloride) which undergo sublimation.
The conversion of a solid into vapours without passing through the liquid state is called :
When water is heated to a temperature x, it gets converted into steam at temperature x by a process called R. And when steam at temperature x is cooled, it gets reconverted into water at the same temperature x by a process called S.
- How much is the value of x in Kelvin ?
- What is the process R called ?
- What is the name of the energy absorbed during the process R ?
- What is process S known as ?
- What is the name of energy released during the process S known as ?\\
Define Intermodular space
Give two examples of the following:
Substances which sublime.
Think and try to find a way to demonstrate water cycle in class
Give the reason for the following
Solids cannot be compressed, but gases are highly compressible.
