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प्रश्न
Fill in the following blank with suitable words :
The smell of perfume gradually spreads across a room due to .....................
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उत्तर
The smell of perfume gradually spreads across a room due to diffusion.
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संबंधित प्रश्न
Give reasons for the following observation:
The smell of hot sizzling food reaches you several metres away, but to get the smell from cold food you have to go close.
What are the two conditions for the interconversion of states of matter ?
Name the phenomenon which cause the following change:
Conversion of ice into water.
What happens when a solid is heated ?
Give reason Gases can be compressed easily .
Give reason of A gas fills up the space available to it.
Give reason of We can walk through air.
When sugar is dissolved in water, there is no increase in the volume. Which characteristic of matter is illustrated by this observation?
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
Complete the statement by filling the blank with the correct word given below.
In naphthalene, the inter-particle attraction is _______.
