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प्रश्न
Evaporation of a liquid causes cooling.
विकल्प
True
False
MCQ
सत्य या असत्य
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उत्तर
True.
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संबंधित प्रश्न
Water evaporates only at 100°C.
.............. process is just reverse of melting.
State three characteristics of molecules of matter.
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.
Why do solids, liquids, and gases differ in their physical states?
Give a reason for the Gases can be compressed easily.
Name the phenomenon which cause the following change.
Conversion of water into steam.
Match the following
| Column A | Column B | ||
| a | Solids | 1 | Can flow in all directions |
| b | Sublimination | 2 | The temperature at which a liquid changes into its gaseous state |
| c | Boiling Point | 3 | Can have any number of free surfaces |
| d | Gases | 4 | Gaps between particles |
| e | Intermolecular space | 5 | Change of state from solid to gas |
Explain the term ‘matter'
Gas like the state of Matter that exists at extremely cold temperatures used in the field of cryogenics.
