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प्रश्न
Write whether the following statement is true or false.
There is no difference between evaporation and boiling.
विकल्प
True
False
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उत्तर
False
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संबंधित प्रश्न
Define: Solid
Name the terms for the process due to which a solid directly changes into its vapours.
Classify the following into solid, liquid and gas:
Coal, kerosene, wood, oxygen, sugar, blood, water vapour, milk, wax.
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.
Name the phenomenon which causes the Disappearance of camphor is
One litre of water has 6.02 × 1026 molecules. Estimate the size of a molecule.
Define Intermolecular force
Match the following
| Column A | Column B |
| (a) Solids | (i) Can flow in all directions |
| (b) Sublimation | (ii) The temperature at which a liquid changes into its gaseous state. |
| (c) Boiling point | (iii) Any number of free surfaces. |
| (d) Gases | (iv) Gaps between particles. |
| (e) Intermolecular space | (v) Changes of state from solid to gas. |
Write scientific reasons.
Lemon sherbat has a sweet, sour and salty taste and it can be poured in a glass.
Write scientific reason.
Lemon sherbat has a sweet, sour and salty taste and it can be poured in a glass.
