Advertisements
Advertisements
प्रश्न
Give reason :
The odour of scent spreads in a room.
Advertisements
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 the inter-mixing of scent molecules and air molecules, scent fumes spread into the room.
APPEARS IN
संबंधित प्रश्न
Define Intermolecular space.
What are fluids ? Give two examples.
Which of the following is a property of the liquids?
Select the correct alternative
The inter-molecular forces in liquids are
Describe a simple experiment to illustrate that molecules are not at rest, but they constantly move.
Give reason :
When a teaspoon of sugar is added to half a glass of water and stirred, the water level in the glass does not rise.
Match the column.
| Column A | Column B |
| 1. iron and gold | a. molecules are very far apart |
| 2. melting | b. pure substance |
| 3. intermolecular space | c. non-metals |
| 4. compound | d. the space between the molecules |
| 5. gases | e. changes from solid to liquid |
| f. metals |
Give two examples.
Solid element
Write scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
Write scientific reasons.
Lemon sherbat has a sweet, sour and salty taste, and it can be poured into a glass.
