Advertisements
Advertisements
प्रश्न
Give a reason why solids and liquids co-exist at their melting points.
Advertisements
उत्तर
A substance exists in the solid-state below its melting point and in the liquid state above its melting point. Hence, solids and liquids co-exist at their melting point.
APPEARS IN
संबंधित प्रश्न
Water cycle is an example of inter conversion of states of water. Explain.
Define the following term.
Element
Fill in the blank:
Water is a matter because it has mas and occupies....................
Fill in the blank :
Air is a matter because it has ________ and _______ and it can be _________
If an object is taken to the moon from the earth what will be its mass ?
Give reasons for the following:
Water on freezing turns into ice.
Give a reason why –
Liquids have a definite volume but no definite shape.
Match the characteristics of the three states of matter in List I with their correct answer from List II.
| List I | List II |
| 1. Have no definite shape, volume or free surface | A: Solids only |
| 2. Are highly compressible and least rigid | B: Liquids only |
| 3. Have a definite volume, no definite shape and are slightly diffusable | C: Gases only |
| 4. Are not compressible and have no diffusability | D: Liquids and gases only |
| 5. Have mass and occupy space | E: Solids and gases only |
| F: Solids, liquids and gases |
Fill in the blanks:
Matter is defined as anything that occupies _______ and has _______
‘Inter-particle attraction between atoms of gases is very weak’. State five properties of gases which correlate as a consequence of the weak inter-particle attraction between particles of gases.
