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1
Which of the following is an example of liquid ?
Iron
Wood
Milk
Bronze
2
The action of heat generally _________________ the energy of the particles.
Increases
Decreases
No change
None of these.
3
When a teaspoon of solid sugar is dissolved in a glass of liquid water, what phase or phases are present after mixing :
Still solid and liquid
Liquid only
Solid only
Gases only
4
Which of the following describes the liquid phase?
It has a definite shape and a definite volume
It has a definite shape but not a definite volume
It has a definite volume but not a definite shape
It has neither a definite shape nor a definite volume
5
Which of the following is the property of matter ?
It has mass
It occupies space
Both (a) and (b)
It has energy
6
The temperature at which solid changes into liquid is called ___________________
Melting point
Boiling point
Freezing point
Critical point
7
What is the effect of wind speed on evaporation?
Evaporation increases with wind speed.
Evaporation decreases with wind speed.
Evaporation decreases if wind speed is greater than 20 km/hr.
No effect of wind speed on evaporation.
8
Which of the following are correct :
(a) The amount of inter-molecular spaces are directly proportional to the strength of the bonds between the particles.
(b) During the dissolution of sugar in water the particles of sugar occupy the empty spaces between the particles of water.
Only (a) is correct.
Only (b) is correct.
Both (a) and (b) are correct.
9
Which type of matter has a greatest distance between its particles?
Solids
Liquids
Gases
Plasma
10
(a) The particles of matter are too small to be imagined.
(b) Natural materials are obtained from nature like cotton, silk, coal.
(c) The particles of matter have spaces between them.
Only (a) and (b) are correct.
Only (b) and (c) are correct.
Only (a) and (c) are correct.
All of these.