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प्रश्न
Tick the most appropriate answer.
Melting of ice is a
पर्याय
reversible change
irreversible change
chemical change
none of these
उत्तर
reversible change,
APPEARS IN
संबंधित प्रश्न
Convert the following temperature to Celsius scale:
300 K
For any substance, why does the temperature remain constant during the change of state?
Name the temperature at which :
- a liquid changes into a gas.
- a solid changes into a liquid.
What is the common name of solid carbon dioxide ?
Why is solid carbon dioxide known as dry ice ?
Fill in the following blank with suitable words :
Scientists say that there are actually five states of matter : solid, liquid, gas, .................... and ...................
Why does the temperature remain constant during the melting of ice even though heat is supplied continuously ?
Explain why, naphthalene balls kept in stored clothes in our homes disappear over a period of time.
What are the two ways in which the physical states of matter can be changed ?
When heat is constantly supplied by a burner to boiling water, then the temperature of water during vaporisation :
Which of the following energy is absorbed during the change of state of a substance ?
When water is cooled to a temperature x, it gets converted into ice at temperature x by a process called P. And when ice at temperature x is warmed, it gets reconverted into water at the same temperature x in a process called Q.
- What is the value of temperature x in Kelvin ?
- What is the process P known as ?
- What is the name of energy released during process P ?
- What is the process Q known as ?
- What is the name of energy absorbed during process Q ?
Define: cohesive force
Define the following terms: Boiling point
Differentiate between: Solidification and condensation
Give two examples of the following:
Substances which sublime.
A kind of matter which can sublime is
Explain the term boiling point
State which of the following statement is true or false. If false write the correct statement.
Atoms/molecules in gases move only about their own positions.
What will happen if....? And why?
An axe is made of rubber.
