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प्रश्न
Differentiate between: Gas and vapour
उत्तर
| Gas | Vapourisation |
| The substance which remain in the gaseous state under normal conditions of temperature and pressure are called gases | The process by which a substance changes from a liquid state to vapour state is called vaporisation or evaporation |
| example Oxygen, hydrogen, nitrogen | example water to steam |
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संबंधित प्रश्न
What is the physical state of water at 250°C.
For any substance, why does the temperature remain constant during the change of state?
Convert the following temperature to the Kelvin scale.
25°C
The boiling point of water is 100° C. Express this in SI units (Kelvin scale).
Which contains more heat, 1 kg of ice of 0° C or 1 kg of water at 0° C ? Give reason for your answer.
Define the following term Boiling.
What is sublimation ? Name two substances (other than ammonium chloride) which undergo sublimation.
Write whether the following statement is true or false:
Solids have the larger inter-molecular space
Name the phenomenon which causes the following changes:
Conversion of water into steam
State if the following is a physical property of a substance.
Water acidified with dilute sulphuric acid is a good conductor of electricity.
