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प्रश्न
Fill in the blank:
The temperature at which a liquid starts changing into its vapour state is ______.
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उत्तर
The temperature at which a liquid starts changing into its vapour state is boiling point.
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संबंधित प्रश्न
Classify the following into solids, liquids and gases.
Oxygen, milk, common salt, wax, stone, water vapour, carbon-dioxide, sugar, mercury, coal, blood, butter, copper, coconut oil, kerosene.
Give reason for the following.
Pure substances have fixed melting or boiling points.
What is the relation between intermolecular space and intermolecular force ?
What happens when a solid is heated ?
Fill in the blank
The physical state of a substance, which has a fixed volume but no fixed shape is _______
Which of the following statement is incorrect?
Which one of the following statements is not true?
- the molecules in a solid vibrate about a fixed position
- the molecules in a liquid are arranged in a regular pattern
- the molecules in a gas exert negligibly small forces on each other, except during collisions
- the molecules of a gas occupy all the space available
Differentiate the general properties of solids, liquids and gases in the form of a table — with reference to free surfaces.
Describe simple experiment to show that particles of matter are closely packed in solids and less in liquids.
State the term which refers to the conversion of a substance on heating from.
- solid-state to liquid state
- liquid state to vapour state
- vapour state to liquid state
- liquid state to solid-state.
