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प्रश्न
Fill in the blank:
The change of water vapour into water is called ......................
उत्तर
The change of water vapour into water is called condensation.
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संबंधित प्रश्न
What do you observe when a gas jar which appears empty is inverted over a gas jar containing Bromine vapours? Name the phenomenon.
Fill in the blank:
Liquids have a definite ............
Write whether the following statement is true or false.
There is no difference between evaporation and boiling.
Write whether the following statement is true or false.
Intermolecular force of attraction is greater in gases than in liquids.
Fill in the blank :
Air is a matter because it has ________ and _______ and it can be _________
Fill in the following blank with suitable words :
The smell of perfume gradually spreads across a room due to .....................
When a beam of sunlight enters a room through a window, we can see tiny particles X suspended in a gas (or rather a mixture of gases) Y which are moving rapidly in a very haphazard manner.
- What could particles X be ?
- Name the gas (or mixture of gases) Y.
- What is the phenomenon exhibited by particles X known as ?
- What is causing the movement of particles X ?
- What conclusion does the existence of this phenomenon give us about the nature of matter ?
A glass beaker is half-filled with water and an empty glass tumbler is inverted & lowered inside the glass beaker. State your observations on tilting the tumbler below the level of the water in the glass beaker. Give a reason for your answer.
State in which of the three states of matter:
Are the atoms or particles far apart
Explain the term ‘interconversion of matter’ with ice as a starting material.
