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WorksheetsMatter in Our Surroundings
Total questions: 35
Worksheet time: 20mins
Which is the SI unit of temperature?
Celsius
Fahrenheit
Kelvin
Joule
The process of conversion of solid into liquid is:
Sublimation
Melting
Freezing
Condensation
Which one is not a state of matter?
Solid
Plasma
Vacuum
Gas
Which property is not true for liquids?
Fixed volume
Fixed shape
Fluidity
Ability to take shape of container
At 1 atm pressure, the boiling point of water is:
0 °C
100 °C
373 K
Both B and C
Which phenomenon is responsible for the cooling effect after sweating?
Condensation
Evaporation
Melting
Freezing
The SI unit of pressure is:
Pascal
Atmosphere
Torr
mmHg
Which one of the following is an example of diffusion in gases?
Ink spreading in water
Smell of perfume spreading in a room
Sugar dissolving in tea
Salt in water
Which gas shows sublimation property?
Carbon dioxide (Dry ice)
Oxygen
Hydrogen
Nitrogen
Which factor does not affect evaporation?
Wind speed
Surface area
Humidity
Solubility
Particles of matter are very small.
True
False
Evaporation causes cooling.
True
False
Liquids are more compressible than gases.
True
False
Diffusion occurs faster in solids than in liquids.
True
False
Melting of ice is a physical change.
True
False
Matter is made up of ______.
The process of conversion of liquid into vapour below its boiling point is called (a) .
SI unit of density is (a) .
Latent heat of fusion of ice is (a) .
The amount of matter in a body is called (a) .
Why do we feel cool after sweating?
Because sweat absorbs heat during evaporation
Because body produces cold water
Because air is cold
None
Why is diffusion faster in gases than in solids?
Particles of gases are closely packed
Particles of gases move freely with high speed
Particles of gases are heavy
None
Why does a desert cooler cool better on a hot dry day?
Because humidity is high
Because rate of evaporation is high in dry air
Because air is hot
None
Why does the temperature remain constant during melting of ice?
Because supplied heat is used in increasing temperature
Because supplied heat is used in changing state
Because no heat is supplied
None
Why does water convert into vapour even below boiling point?
Because of evaporation
Because of condensation
Because of sublimation
Because of freezing
The inter-particle force is maximum in:
Solids
Liquids
Gases
Plasma
Dry ice is:
Solid CO₂
Liquid CO₂
Gaseous CO₂
None
Which has highest kinetic energy?
Ice
Water
Steam
All equal
Latent heat of vaporization of water is:
334 J/g
100 J/g
2260 J/g
0 J
Conversion of water vapour into liquid is:
Condensation
Evaporation
Sublimation
Melting
Matter exists in how many states under normal conditions?
2
3
4
5
Plasma is found in:
Tube lights and stars
Ice cubes
Water bottles
Salt
Which property of particles is responsible for spreading of ink in water?
Kinetic energy
Force of attraction
Shape
Density
The boiling point of alcohol is lower than water because:
Alcohol has lower density
Alcohol evaporates faster
Alcohol is solid
Alcohol does not dissolve
Which one is correct about gases?
Fixed shape, fixed volume
No fixed shape, no fixed volume
No shape, fixed volume
Fixed shape, no volume
