Advertisements
Advertisements
प्रश्न
Fill in the following blank with suitable words :
The smell of perfume gradually spreads across a room due to .....................
उत्तर
The smell of perfume gradually spreads across a room due to diffusion.
APPEARS IN
संबंधित प्रश्न
What are the two conditions for the interconversion of states of matter ?
How will you prove by an experiment that solids occupy space ?
Fill in the blank:
Liquids have no definite ............
For the following statement, say whether it describes a solid, a liquid or a gas.
Particles move about very quickly.
For the following statement, say whether it describe a solid, a liquid or a gas.
Particles are quite close together.
Match the columns.
| (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) change from solid to liquid |
| (f) metals |
Name the phenomenon which cause the following change:
Conversion of ice into water.
When a stone is dipped in a glass containing some water, the level of water rises but when a spoon of sugar is added to it and stirred, the water level does not rise?
Fill in the blank
Matter is anything that has ______ and occupies ______
Even two or three crystals of potassium permanganate can impart colour to a very large volume of water. Which characteristic of particles of matter is illustrated by this observation?
