The smallest unit of matter that exists freely in nature is called ...........
Concept: Matter
Intermolecular space is maximum in .......... less in ............ and the least in .........
Concept: Matter
Intermolecular force of attraction is maximum in ............ less in .......... and the least in .............
Concept: Matter
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
Select the correct alternative
The molecules can move freely anywhere in
- gases
- liquids
- solids
- none of the above
Concept: Matter
What do you mean by the inter-molecular spaces? How do they vary in different states of matter?
Concept: Matter
Liquids have definite volume but do not have definite shape.
Concept: Matter
Gases have definite volume but no definite shape.
Concept: Matter
A coolie does no work against the force of gravity while carrying a luggage on a road.
Concept: Work
Work done by a boy depends on the time in which he does work.
Concept: Work
Power spent by a body depends on the time for which it does work.
Concept: Work
Work is said to be done by a forte only when ................
Concept: Work
Work done = Force × ........................................
Concept: Work
