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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
When you put some ice cubes in a glass, droplets of water are formed on the outer wall of the glass. This explains the phenomenon of
विकल्प
melting
freezing
condensation
evaporation
उत्तर
condensation
APPEARS IN
संबंधित प्रश्न
What is the physical state of water at 100°C.
Tick the most appropriate answer.
Chemical changes involve
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Write the relation between Kelvin scale and Celsius scale of temperature.
What should be added to a Celsius scale reading so as to obtain the corresponding Kelvin scale reading ?
What is the common name of solid carbon dioxide ?
Define the term 'latent heat of vaporisation' of a liquid. What is the value of the latent heat of vaporisation of water ?
One of the following does not undergo sublimation. This one is :
When water at 0°C freezes to form ice at the same temperature of 0°C, then it :
The latent heat of vaporisation of water is :
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 the following terms: Vaporisation
Define the following terms: Condensation
Give reasons:
How is interconversion of states of matter different from chemical reaction?
Write whether the following statement is true or false:
There is no difference between evaporation and boiling
There are large intermolecular gaps in
Write the properties of this substance.
Water
What is it made from? Why?
The sheets used for roofing.
State whether the following statement is true or false. If false write the correct statement.
During physical changes, the composition of the original substance is not altered, but the properties of the original substance are altered.
With reference to the liquid state of matter – answer the following
On heating, the liquid, do the particles gain or lose energy.
