The smallest unit of matter that exists freely in nature is called ...........
Concept: Matter (Substance)
Intermolecular space is maximum in .......... less in ............ and the least in .........
Concept: Matter (Substance)
Intermolecular force of attraction is maximum in ............ less in .......... and the least in .............
Concept: Matter (Substance)
Match the following
| Column A | Column B | ||
| (a) | Molecules | (i) | Water boils |
| (b) | 100° C | (ii) | Evaporation |
| (c) | 0° C | (iii) | Changes from solid to gas |
| (d) | At all temperatures | (iv) | Matter |
| (e) | Camphor | (v) | Water freezes |
Concept: Matter (Substance)
The inter-molecular force is maximum in
Concept: Matter (Substance)
The inter-molecular space is maximum in
Concept: Matter (Substance)
The molecules can move freely anywhere in
Concept: Matter (Substance)
Select the correct alternative
The molecules can move freely anywhere in
- gases
- liquids
- solids
- none of the above
Concept: Matter (Substance)
Define the term matter. What is it composed of?
Concept: Matter (Substance)
What do you mean by the inter-molecular spaces? How do they vary in different states of matter?
Concept: Matter (Substance)
Solids have definite shape and definite volume.
Concept: Matter (Substance)
Liquids have definite volume but do not have definite shape.
Concept: Matter (Substance)
Gases have definite volume but no definite shape.
Concept: Matter (Substance)
Liquids have definite shape and definite volume.
Concept: Matter (Substance)
Name the processes involved in two cases.
Concept: Matter (Substance)
A fuse wire has a high melting point.
Concept: Static Electricity
Silver is an insulator of electricity.
Concept: Static Electricity
All metals are insulators of electricity.
Concept: Static Electricity
Match the following
| Column A | Column B |
| Electric power | volt |
| kWh | joule |
| Electric current | volt × ampere |
| Electric energy | watt |
| watt | ampere |
| potential difference | electrical energy |
Concept: Static Electricity
How can you check just by seeing the meter whether the electricity is in use or not?
Concept: Static Electricity
