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प्रश्न
Give reason of The odour of scent spreads in a room.
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उत्तर
Scent fumes (molecules) being gases fill the spaces between air molecules and the molecules of air fill the spaces between scent molecules due to diffusion, fumes spread into a room.
OR
Due to inter-mixing of scent molecules and air molecules, scent fumes spread into the room.
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संबंधित प्रश्न
Fill in the blank:
The temperature at which a liquid starts changing into its vapour state is ______.
Give two example of the following:
The substances which do not change their state on heating.
There are large intermolecular gaps in
- water
- iron ball
- common salt
- air
Write true or false for each statement. Rewrite the false statement correctly.
If the intermolecular space is more than the intermolecular force will be weaker.
There are large intermolecular gaps in
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
Fill in the blank with the correct word Given below.
The space between atoms’ [molecules] of solids is ____
Give a reason why –
Solids have a definite volume & a definite shape.
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.
In a glass containing some water, tamarind juice and sugar are added and stirred well. Is this a mixture? Can you tell why? Will this solution be sweet or sour or both sweet and sour?
