Multiple Choice Questions

Matter In Our Surroundings

Updated for CBSE 2027
100+ Practice Questions
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Practice Questions with Answers

Total 100 questions available

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Q. 1
However great the pressure, a gas cannot be liquefied above its
A
Room temperature
B
Inversion temperature
C
Boyle temperature
D
Critical temperature
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Q. 2
Under what conditions does diffusion occur faster?
A
Low temperature
B
High temperature
C
High pressure
D
Low pressure
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Q. 3
Choose the correctly matched pair.
A
Latent Heat of Fusion - Energy required to change 1 kg of solid to liquid
B
Boiling Point of Water - 273 K
C
Melting Point of Ice - 373 K
D
Latent Heat of Vaporisation - Temperature at which a liquid starts boiling
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Q. 4
What is the physical state of water at 10°C?
A
Liquid
B
Solid
C
Gas
D
All of these
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Q. 5
Conversion of a liquid to a gas at all temperatures is called
A
Sublimation
B
Evaporation
C
Condensation
D
Boiling
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Q. 6
Assertion (A): Evaporation causes cooling in an open vessel. Reason (R): Energy is absorbed from the surroundings during evaporation, leading to a decrease in temperature.
A
If both Assertion and Reason are true and Reason is the correct explanation of Assertion
B
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
C
If Assertion is true but Reason is false
D
If both Assertion and Reason are false
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Q. 7
What kind of energy does particles of matter possess?
A
Sound energy
B
Electrical energy
C
Solar energy
D
Kinetic energy
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Q. 8
What describes the arrangement of particles in a gas?
A
Random and tightly packed
B
Fixed and orderly
C
Close together but disordered
D
Spread out and not closely packed
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Q. 9
Why does a gas exert pressure on walls of the container?
A
Because particles of gas are static.
B
Because particles of gas hit the walls of container.
C
Because particles of gas react with each other.
D
None of the above
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Q. 10
In the diffusion experiment with ink and honey, why does honey take longer to spread?
A
Honey particles have less kinetic energy
B
Honey is less dense
C
Honey particles are larger
D
Honey is more viscous
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Q. 11
The temperature at which a solid changes into liquid at atmospheric pressure is called –
A
Evaporation
B
Boiling point
C
Melting point
D
Diffusion
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Q. 12
Name the process by which a drop of ink spreads in a beaker of water –
A
Sublimation
B
Vaporization
C
Diffusion
D
Condensation
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Q. 13
Which of the following does not undergo sublimation?
A
Sodium chloride
B
Iodine
C
Ammonium chloride
D
Solid carbon dioxide
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Q. 14
Choose the correctly matched pair.
A
Panch Tatva - Five Basic Elements
B
SI unit of mass - Litre
C
Particles of matter - Continuous
D
SI unit of volume - Metre
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Q. 15
How does the particle movement in a liquid compare to that in a gas?
A
Particles in a liquid move less freely
B
Particles in a liquid move more freely
C
Particles in a liquid are stationary
D
Particles in a liquid move at the same speed as in a gas
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Q. 16
Shivam visited an LPG unit and found that the gas can be liquefied at specific conditions. What are the correct conditions?
A
Low temperature and high pressure
B
High temperature and high pressure
C
High temperature and low pressure
D
Low temperature and low pressure
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Q. 17
Latent heat of fusion is the amount of
A
Heat energy required to change 1 kg of solid into liquid completely
B
Heat energy required to change 1 kg solid into liquid completely at its melting point
C
Heat energy required to change 1 kg of solid into liquid at any temperature
D
Heat energy required to convert 1 kg solid into liquid at room temperature
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Q. 18
Why does ink spread faster than honey in water?
A
Honey particles have higher density
B
Ink particles move faster
C
Ink particles are larger
D
Honey is more viscous
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Q. 19
Fluids are –
A
Liquids and gases
B
Only solids
C
Liquids and solids
D
Solids and gases
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Q. 20
Which of the following is not correct?
A
SI unit of temperature is kelvin
B
SI unit of density is kg/m³
C
1 litre = 1000 cm³ = 1 dm³
D
SI unit of pressure is Newton
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Q. 21
Arrange the following substances in increasing order of attraction between the particles: water, sugar, oxygen.
A
water < sugar < oxygen
B
oxygen < water < sugar
C
sugar < oxygen < water
D
none
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Q. 22
Which of the following will not sublimate?
A
Camphor
B
ammonium chloride
C
iodine
D
bromine
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Q. 23
As the solid melts to form a liquid, which of the following occurs?
A
Compressibility increases
B
Interparticle forces of attraction decrease
C
The kinetic energy of the particle increases
D
All of these
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Q. 24
Which of the following statements is not true?
A
None of these
B
Solid state is the most compact state of a substance
C
Particles which constitute the matter follow a zig-zag path
D
Matter is continuous in nature
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Q. 25
Kinetic energy of molecules is directly proportional to
A
Temperature
B
Pressure
C
Both (a) and (b)
D
Atmospheric pressure
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Q. 26
What is demonstrated by the experiment of hammering iron wire, chalk, and stretching a rubber band?
A
Heat conduction
B
Cohesion and strength of attraction
C
Electrical resistance
D
Particle density
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Q. 27
What happens to a rubber band when it is stretched?
A
It turns into a solid
B
It breaks immediately
C
It stretches significantly before breaking
D
It remains unchanged
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Q. 28
Identify the incorrect statement about evaporation
A
It increases with increase in wind speed
B
It decreases with increase in temperature
C
It increases with increase in humidity
D
It causes cooling
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Q. 29
Which condition will increase the evaporation of water?
A
Less exposed surface area of water
B
Adding common salt to water
C
Increase in temperature of water
D
Decrease in temperature of water
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Q. 30
What is the physical state of water at 100°C?
A
both gaseous and liquid state
B
solid state
C
liquid state
D
gaseous state
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Q. 31
A desert cooler gives comfort due to cooling caused by evaporation of water. Under which condition does it work more effectively?
A
On a rainy day
B
Hot and humid weather
C
Hot and dry weather
D
A hot and sunny day
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Q. 32
Name the state of matter which has least compressibility.
A
Liquid
B
Solid
C
Gas
D
None of the above
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Q. 33
In which state of matter do particles have a definite volume but no definite shape?
A
Gas
B
Plasma
C
Liquid
D
Solid
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Q. 34
What happens when you add sugar to water?
A
Volume of water doubles.
B
Volume of water decreases.
C
Volume of water remains the same.
D
None of the above
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Q. 35
The rate of evaporation decreases with
A
increase in wind speed
B
increase of temperature
C
increase of surface area
D
increase in humidity
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Q. 36
Which substance undergoes sublimation process?
A
N2
B
Br2
C
Naphthalene
D
Ice
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Q. 37
Particles of a liquid -
A
have large intermolecular spaces
B
move in systematic order
C
can slip and slide over each other
D
are most ordered
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Q. 38
What effect does increasing temperature have on the particles of matter?
A
Decreases their movement
B
Increases their movement
C
No effect on movement
D
Makes them move randomly
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Q. 39
Convert 300K into Celsius
A
5730°C
B
3000°C
C
2730°C
D
27°C
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Q. 40
Which state of matter has the strongest particle attraction?
A
Liquid
B
Solid
C
Plasma
D
Gas
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Q. 41
In an endothermic process heat is absorbed, in an exothermic process heat is evolved and in an athermic process no thermal change is observed. What is the nature of evaporation of ether?
A
Exothermic
B
Athermic
C
First exothermic then endothermic
D
Endothermic
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Q. 42
When alcohol is kept in a china dish it evaporates, temperature falls and cooling is produced. Which method is correct to record the temperature?
A
By using a thermometer
B
By smell of alcohol vapour
C
By touching the surface of china dish
D
By taking help from the teacher
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Q. 43
Plasma is the.......... state of matter
A
Third
B
Fourth
C
First
D
Second
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Q. 44
On converting 25°C, 38°C, and 66°C to Kelvin scale, the correct sequence of temperature will be
A
298 K, 311 K and 339 K
B
273 K, 278 K and 543 K
C
298 K, 300 K and 338 K
D
298 K, 310 K and 338 K
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Q. 45
Find the incorrect statement
A
Low boiling liquids evaporate faster than high boiling liquids.
B
Cooling is caused during boiling
C
The normal room temperature is 298K and 293K both.
D
Evaporation is a surface phenomenon but boiling is not
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Q. 46
The interparticle forces are the strongest in
A
Ammonia
B
Sodium Bromide
C
Carbon dioxide
D
Ethyl alcohol
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Q. 47
Spreading of fragrance of a burning incense stick in a room shows that:
A
Particles of matter have spaces between them.
B
Particles of matter attract each other.
C
Particles of matter are constantly moving.
D
None of the above
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Q. 48
How does the movement of particles relate to the mixing of substances?
A
Slower particles lead to faster mixing
B
Faster particles lead to faster mixing
C
Particle movement has no effect on mixing
D
Faster particles lead to slower mixing
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Q. 49
What is the force called that holds particles of the same substance together?
A
Adhesion
B
Cohesion
C
Electromagnetism
D
Gravity
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Q. 50
What does the continuous movement of particles in matter demonstrate?
A
Electrical energy
B
Gravitational force
C
Kinetic energy
D
Thermal energy
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Q. 51
An Almirah is a solid because its
A
hard and rigid
B
shape doesn’t change when pressed
C
density is very high
D
All of these
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Q. 52
The temperature at which a liquid starts boiling at atmospheric pressure is known as –
A
Boiling point
B
Condensation
C
Latent heat
D
Melting point
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Q. 53
Particles of matter intermix on their own with each other by getting into the ____ between the particles.
A
Force
B
Spaces
C
Mass
D
Energy
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Q. 54
What is the term used for the process where particles spread out on their own in a liquid?
A
Evaporation
B
Diffusion
C
Convection
D
Condensation
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Q. 55
What happens to the smell of an incense stick when it is lit?
A
It becomes less noticeable
B
It disappears quickly
C
It spreads throughout the room
D
It stays in one place
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Q. 56
Which of the following state of matter is easily compressible?
A
Solid
B
Liquid
C
Gas
D
None of the above
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Q. 57
What effect does increasing temperature have on the kinetic energy of particles?
A
It freezes the particles
B
It has no effect on their kinetic energy
C
It decreases their kinetic energy
D
It increases their kinetic energy
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Q. 58
When we put some crystals of potassium permanganate in a beaker containing water, we observe that after some time, the whole water turns pink. This is due to:
A
Diffusion
B
Sublimation
C
Melting
D
Brownian motion
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Q. 59
Liquids are called fluids because:
A
Liquids do not fill the whole container in which they are placed.
B
Liquids can flow.
C
Particles of a liquid have spaces between them.
D
Particles of a liquid have no force of attraction between them.
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Q. 60
Why is the rate of diffusion of liquids higher than that of solids?
A
In solid state, particles cannot be compressed easily.
B
In the liquid state, particles move freely as compared to solids.
C
In solid state, particles have least force of attraction between the particles.
D
In the liquid state, particles are tightly packed.
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Q. 61
What occurs to the particles in a gas when it is compressed?
A
They move faster and stay apart
B
They stop moving
C
They stay the same
D
They move slower and get closer together
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Q. 62
The physical state of matter which can be easily compressed –
A
Liquid
B
Gas
C
Solid
D
None of these
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Q. 63
Identify the incorrect statement
A
Ether is most volatile
B
Water is least volatile
C
Alcohol is moderately volatile
D
Acetone is least volatile
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Q. 64
Which one of the following sets of phenomena would increase on raising the temperature?
A
Evaporation, solubility, diffusion, compression of gases
B
Evaporation, compression of gases, solubility
C
Evaporation, diffusion, expansion of gases
D
Evaporation, diffusion, compression of gases
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Q. 65
On increasing the temperature of the liquid the rate of evaporation is –
A
Increase
B
Decreases
C
No change
D
None of these
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Q. 66
In which state of matter, the distance between the particles is least?
A
Solid
B
Liquid
C
Gas
D
None of the above
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Q. 67
Why does chalk break into powder when hammered?
A
Strong particle attraction
B
No particle movement
C
Random particle arrangement
D
Weaker particle attraction
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Q. 68
The process of change of a liquid into vapor at any temperature is called –
A
Diffusion
B
Cooling
C
Evaporation
D
Heating
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Q. 69
The property to flow is unique to fluids. Which one of the following statements is correct?
A
Gases and liquids behave like fluids
B
Only liquids are fluids
C
Gases and solids behave like fluids
D
Only gases behave like fluids
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Q. 70
Which factor affecting Evaporation –
A
Temperature
B
Surface area
C
Both Temperature & Surface area
D
None of these
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Q. 71
The boiling point of water on the Kelvin scale is –
A
573 K
B
273 K
C
100 K
D
373 K
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Q. 72
The process for the change of a solid directly into its vapor is called –
A
Ebullition
B
Condensation
C
Evaporation
D
Sublimation
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Q. 73
Under which of the following conditions can we boil water at room temperature?
A
At very high pressure
B
At moderate pressure
C
At atmospheric pressure
D
At low pressure
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Q. 74
Which process involves the transformation of gas directly into a solid?
A
Sublimation
B
Vaporization
C
Deposition
D
Condensation
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Q. 75
Which of the following does not affect the rate of evaporation?
A
Temperature
B
Insoluble heavy impurities
C
Surface area
D
Wind speed
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Q. 76
What factor does not affect the rate of evaporation?
A
Insoluble heavy impurities
B
Temperature
C
Wind speed
D
Surface area
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Q. 77
Dry ice is –
A
CO2 in liquid state
B
Water in gaseous state
C
CO2 in solid state
D
Water in solid state
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Q. 78
Which of the following has the weakest particle attraction?
A
Plasma
B
Solid
C
Liquid
D
Gas
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Q. 79
Assertion (A): Water droplets form on the outer surface of a glass containing ice-cold water. Reason (R): Water evaporates from the glass and condenses on the outside.
A
If both Assertion and Reason are true and Reason is the correct explanation of Assertion
B
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
C
If Assertion is true but Reason is false
D
If both Assertion and Reason are false
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Q. 80
What property of matter allows gases to be highly compressible compared to solids and liquids?
A
Rigid structure
B
Fixed volume
C
Random movement of particles
D
Definite shape
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Q. 81
Which of the following has the strongest interparticle force at room temperature?
A
Chalk
B
Iron
C
Mercury
D
Nitrogen
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Q. 82
According to the kinetic theory of gases, in an ideal gas, between two successive collisions a gas molecule travels
A
in a circular path
B
with an accelerated velocity
C
in a wavy path
D
in a straight line path
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Q. 83
Find the incorrect statement
A
Potassium permanganate is orange in colour.
B
Solids have negligible K. E. of the particles.
C
Gases have maximum fluidity and least rigidity.
D
Inter-particle attraction depends on the physical state of the matter
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Q. 84
The melting point of ice is –
A
0°C
B
4°C
C
5°C
D
None of these
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Q. 85
Which of the following statements is incorrect?
A
Particles of matter attract each other
B
Matter is continuous in nature
C
Matter is made up of particles
D
Particles of matter are always in state of motion
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Q. 86
Pressure on the surface of a gas is increased. What will happen to the inter-particle forces?
A
They will remain constant
B
They will increase
C
They will decrease
D
None of these
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Q. 87
Convert the temperature of 270 K to the Celsius scale –
A
5°C
B
–4°C
C
–3°C
D
2°C
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Q. 88
What does the experiment with an unlit and lit incense stick illustrate about particles?
A
Particles move only when heated
B
Particles move continuously
C
Particles move in a fixed path
D
Particles do not move
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Q. 89
Convert the temperature of 373°C to the Kelvin scale?
A
646 K
B
500 K
C
546 K
D
300 K
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Q. 90
What principle is demonstrated by the diffusion of particles from a higher concentration to a lower concentration?
A
Kinetic theory
B
Conservation of mass
C
Law of mixtures
D
Osmosis
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Q. 91
Solids do not flow because
A
Of large molecular space between particles
B
They do not have a definite shape
C
They have very strong intermolecular forces in between particles
D
All of these
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Q. 92
Choose the correct statement out of the following.
A
Conversion of solid into vapours without passing through the liquid state is called vaporisation
B
Conversion of solid into vapours without passing through the liquid state is called sublimation
C
Conversion of vapours into solid without passing through the liquid state is called Condensation
D
Conversion of solid into vapours without passing through the liquid state is called fusion
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Q. 93
What observation is expected when crystals dissolve in hot water compared to cold water?
A
Faster dissolution in cold water
B
Faster dissolution in hot water
C
Same rate of dissolution in both cases
D
Crystals dissolve only in cold water
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Q. 94
Which term describes the random movement of microscopic particles in a fluid due to continuous bombardment from surrounding molecules?
A
Brownian dance
B
Zig-zag dance
C
Brownian motion
D
Particle waltz
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Q. 95
Condensation process is –
A
Change of state from gas to solid
B
Change of state from liquid to gas
C
Change of state from solid to liquid
D
Change of state from gas to liquid
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Q. 96
Name the state of matter that ‘has minimum interparticle attraction’
A
Liquid
B
Solid
C
Gas
D
All of these
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Q. 97
What is the volume of gases?
A
Take the volume of container
B
Large
C
Almost Nil
D
Definite
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Q. 98
Which of the following is the correct order of forces of attraction?
A
Salt > Air > Juice
B
Air > Sugar > Oil
C
Air < Water < Sugar
D
Water > Air > Sand
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Q. 99
The change of state from solid to liquid is known as –
A
Melting
B
Boiling
C
Sublimation
D
None of these
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Q. 100
Which one of the following decreases the extent of evaporation of water?
A
High temperature
B
Large humidity
C
High wind speed
D
Large surface area
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