# Class 9 Science Chapter 1 Matter In Our Surroundings MCQ Questions with Answer

Matter In Our Surroundings Class 9 MCQ is one of the best strategies to prepare for the CBSE Class 9 Board exam. If you want to complete a grasp concept or work on one’s score, there is no method except constant practice. Students can improve their speed and accuracy by doing more Matter In Our Surroundings class 9 MCQ which will help them all through their board test.

## Matter In Our Surroundings Class 9 MCQ Questions with Answer

Class 9 Science MCQ with answers are given here to Chapter 1 Matter In Our Surroundings. These MCQs are based on the latest CBSE board syllabus and relate to the latest Class 9 Science syllabus. By Solving these Class 9 MCQs, you will be able to analyze all of the concepts quickly in the Chapter and get ready for the Class 9 Annual exam.

Learn Matter In Our Surroundings Class 9 MCQ with answers pdf free download according to the latest CBSE and NCERT syllabus. Students should prepare for the examination by solving CBSE Class 9 Matter In Our Surroundings MCQ with answers given below.

Question 1: The evaporation of a liquid can best be carried out in a:
(b) China dish
(c) T est tube
(d) Beaker

B

Question 2: Zig-zag movement of the solute particle in a solution is known as
(a) Linear motion
(b) Circular motion
(c) Brownian motion
(d) Curved motion.

C

Question 3: When a gas jar full of air is placed upside down on a gas jar full of bromine vapours, the red-brown vapours of bromine from the lower jar go upward into the jar containing air. In this experiment:
(a) Air is heavier than bromine
(b) Both air and bromine have the same density
(c) Bromine is heavier than air
(d) Bromine cannot be heavier than air because it is going upwards against gravity

C

Question 4: When water at 0°C freezes to form ice at the same temperature of 0°C, then it:
(a) Absorbs some heat
(b) Releases some heat
(c) Neither absorbs nor releases heat
(d) Absorbs exactly 3.34 x 105J/kg of heat

B

Question 5: A gas which obeys the gas laws is known as:
(a) An ideal gas
(b) A heavier gas
(c) A lighter gas
(d) A real gas

A

Question 6: What s the term used to describe the phase change as a liquid becomes a solid?
(a) Evaporation
(b) Condensation
(c) Freezing
(d) None of the above

C

Question 7: Which of the following phenomena would increase on raising the temperature?
(a) Diffusion, evaporation, compression of gases
(b) Evaporation, compression of gases, solubility
(c) Evaporation, diffusion, expansion of gases
(d) Evaporation, solubility, diffusion, compression of gases

C

Question 8: CO2 can be easily liquified and even solidified because
(a) It has weak forces of attraction
(b) It has comparatively more force of attraction than other gases
(c) It has more intermolecular space
(d) It is present in atmosphere.

B

Question 9: A few substances are arranged in the increasing order of ‘forces of attraction’ between their particles. Which one of the following represents a correct arrangement?
(a) Water, air, wind
(b) Air, sugar, oil
(c) Oxygen, water, sugar
(d) Salt, juice, air

C

Question 10: Which of the following phenomena always results in the cooling effect?
(a) Condensation
(b) Evaporation
(c) Sublimation
(d) None of these

B

Question 11 : The colour of vapours formed on sublimation of iodine solid is
(a) Purple (violet)
(b) Colourless
(c) Yellow
(d) Orange

A

Question 12: Out of the following which is the densest state of matter?
(a) Solids
(b) Liquids
(c) Gases
(d) Plasmas

A

Question 13 : Rate of diffusion of a gas is:
(a) Directly proportional to its density
(b) Directly proportional to its molecular mass
(c) Inversely proportional to the square root of its density
(d) Inversely proportional to the square root of its molecular mass

D

Question 14 : Kinetic energy of molecules is directly proportional to
(a) Temperature
(b) Pressure
(c) Both (a) and (b)
(d) Atmospheric pressure

A

Question 15 : The quantity of matter present in an object is called its:
(a) Weight
(b) Gram
(c) Mass
(d) Density

C

Question 16 : When we put some crystals of potassium permanganate in a beaker containing water, we observe that after sometime whole water has turned pink. This is due to:
(a) Boiling
(b) Melting of potassium permanganate crystals
(c) Sublimation of crystals
(d) Diffusion

D

Question 17 : Which of the following describes the liquid phase?
(a) It has a definite shape and a definite volume
(b) It has a definite shape but not a definite volume
(c) It has a definite volume but not a definite shape
(d) It has neither a definite shape nor a definite volume

C

Question 18 : Equal volumes of all gases under similar conditions of temperature and pressure contain equal numbers of molecules. This statement was made by:
(a) Gay- lussae
(c) Berzilius
(d) John Dalton

B

Question 19 :  0 ° C temperature is equal to
(a) 0 K
(b) 273 K
(c)-273 K
(d) 300 K

B

Question 20 : When we add sugar in water, particles of sugar disappear because they –
(a) are very small
(b) get into the spaces between water particles
(c) are moving
(d) all above

D

Question 21 : Which of the following substances becomes liquid easily upon heating?
(a) butter
(b) glass
(c) sponge
(d) rubber band

A

Question 22 : Gases are liquefied under
(a) high pressure, high temperature
(b) high pressure, low temperature
(c) low pressure, high temperature
(d) low pressure, low temperature

Question 23 : Which condition out of the following will increase the evaporation of water?
(a) Increase in temperature of water
(b) Decrease in temperature of water
(c) Less exposed surface area of water
(d) Adding common salt to water

A

Question 24 : Which of the following statement is not true regarding the characteristic of matter?
(a) Particles of a matter are randomly moving in all directions.
(b) Kinetic energy of the particles increases with a rise in temperature
(c) Kinetic energy of the particles of all maters remains the same at a particular temperature.
(d) Particles of matter diffuse into each other on their own.

C

Question 25 : Which one is a sublime substance?
(a) Table salt
(b) Sugar
(c) Iodine
(d) Potassium iodide

C

Question 26 : Liquids have –
(a) fixed volume and fixed shape
(b) fixed shape and no fixed volume
(c) fixed volume and no fixed shape
(d) neither fixed volume nor fixed shape

C

B

Question 27: Which is not the characteristic of matter –
(a) particles of a matter are continuously moving,
(b) particles of matter move faster on increasing temperature,
(c) particles of matter intermix with each other on their own,
(d) particles of all maters have same kinetic energy.

D

Question 28 : As solid melts to form liquid:
(a) Inter particle distance increases
(b) Inter molecular forces of attraction decreases
(c) Compressibility increases
(d) All of the above

D

Question 29: Which of the following is not characteristic of solid:
(a) High Rigidity
(b) Regular Shape
(c) High density
(d) High compressibility

D

Question 30: The boiling point of water is:
(a) 101°C at atmospheric pressure
(b) 273K at atmospheric pressure
(c) 0°C at atmospheric pressure
(d) 0K at atmospheric pressure

A

Question 31 : Which of the following has highest intermolecular forces of attraction?
(a) Water at room temperature
(b) CO2 gas
(c) Ethyl alcohol
(d) Iron metal

D

Question 32 : Which of the following substances will undergo sublimation?
(a) Common salt
(b) Odonil
(c) Sugar
(d) Sand

B

Question 33 : The process of evaporation causes:
(a) Cooling
(b) Heating
(c) Dryness
(d) None of the above

A

Question 34 : Wet clothes are kept for drying. Which of the following does not help them in drying:
(b) Blowing wind over it
(c) Making the room a little warmer
(d) Cooling the room

D

Question 35 : At higher altitudes the boiling points of liquids
(a) Increases
(b) Decreases
(c) Remains the same
(d) Increases then decreases

B

Question 36: During evaporation particles of a liquid change into vapours :
(a) From the surface
(b) From the bulk
(c) From the bottom
(d) From all over the liquid

B

Question 37 : The conversion of solid to gas directly is called:
(a) Evaporation
(b) Sublimation
(c) Distillation
(d) condensation

B

Question 38 : Evaporation of a liquid can take place:
(a) At its boiling point
(b) At all temperatures
(c) At its freezing point
(d) At a fixed temperature

B

Question 39 : Which of the following describes a liquid state:
(a) Definite volume and definite shape
(b) Definite volume and no specific shape
(c) definite shape but no definite volume
(d) neither definite shape nor definite volume

B

Question 40 : Latent heat of vapourisation is used to:
(a) Overcome forces of attraction between the liquid particles at the boiling point
(b) Overcome forces of attraction between solid particles at the freezing point
(c) Increase the kinetic energy of particles in the liquid state
(d) Increase the kinetic energy of the particles in the vapour phase

A

Question 41 : Which of the following has highest density?
(a) Kerosene
(b) Water
(c) Iron
(d) Wood

C

Question 42 : In which phenomenon does water change into water vapour below its boiling point:
(a) Boiling
(b) Evaporation
(c) Freezing
(d) Sublimation

B

Question 43 : We get the smell of hot food in the kitchen outside the house because of:
(a) Boiling
(b) Evaporation
(c) Sublimation
(d) Diffusion

D

Question 44 : Which are the favourable conditions for liquefaction of petroleum gas:
(a) High pressure, high temperature
(b) Low pressure, low temperature
(c) High pressure, low temperature
(d) Low pressure, high temperature

C

Question 45 : Cations migrate to _______ during electrolysis.

(a) Migrate to both cathode and anode

(b) cathode

(c) do not migrate to either cathode or anode
(d) anode.

B

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Question 46 : Liquids have ______ shape and _____ volume.

(a) definite, definite

(b) definite, indefinite

(c) indefinite, definite

(d) indefinite, indefinite.

C

Question 47 : Dry ice on heating produces:
(a) Liquid CO
(b) Gas CO
(c) Liquid water
(d) Water vapour

B

Question 48 : Particles move randomly in:
(a) Water
(b) Sugar
(c) Nitrogen
(d) Dry ice

C

Question 49 : When we blow air into the balloon it inflates because:
(a) Air particles diffuse into the balloon
(b) Air particles collide with the walls of the balloon and exert pressure on them
(c) Rubber is elastic in nature
(d) The temperature of air in the balloon increases

B

Question 50 : The conversion that takes place at room temperature is

(a) boiling

(b) evaporation

(c) melting

(d) freezing.

B

Question 51 : Number of protons in parent atom is ______ the anion.

(a) greater than

(b) smaller than

(c) equal to

(d) can be greater or smaller than.

C

Question 52 : Number of electrons in parent atom is _______ the cation.

(a) greater than

(b) smaller than

(c) equal to

(d) can be greater or smaller than.

A

Question 53 : The inter particle distances are maximum in _________ and minimum in ___________

(a) solids, liquids

(b) solids, gases

(c) gases, solids

(d) liquids, solids.

C

Question 54 : The inter particle forces of attraction is maximum in _______ and minimum in ______

(a) solids, liquids

(b) solids, gases

(c) gases, solids

(d) liquids, solids.

B

Question 55 : Conversion of solid to gas is called

(a) vapourisation

(b) condensation

(c) liquefaction

(d) sublimation.

D

Question 56 : The characteristic property of mater is / are

(a) it has mass

(b) it has volume

(c) it can be perceived by our senses

(d) all three (A, B & C)

D

Question 57 : The increasing order of inter particle attractions of sugar, oxygen, gold, water is

(a) sugar < oxygen < gold < water

(b) sugar > oxygen > gold > water

(c) oxygen < water < sugar < gold

(d) oxygen > water > sugar > gold.

C

Question 58 : The formula of hydroxide radical is:

(a) H+

(b) H3O+

(c) OH–

(d) H–.

C

Question 59 : Which is not a pure substance in the four options given?

(a) alloy

(b) sugar

(c) distilled water

(d) copper wire.

A

Question 60 : The quantity of matter in 1 kg of cotton is _______ that present in 1 kg of sugar.

(a) smaller than

(b) greater than

(c) equal to

(d) can not say.

B

Question 61 : The volume of matter in 1 kg of cotton is ____ that present in 1 kg of sugar.

(a) smaller than

(b) grater than

(c) equal to

(d) can not say.

B

Question 62 : The type of motion that is present in solids is:

(a) random

(b) linear (in a straight line)

(c) vibratory

(d) circular.

C

Question 63 : The pressure exerted by a gas is due to

(a) inter particle collisions

(b) collisions with the walls of the container

(c) gravity

(d) atmospheric pressure.

B

Question 64 : If a perfume bottle is opened in one corner of a room, the smell can be felt after sometime in the opposite corner. This shows that

(a) particles of matter are constantly moving

(b) the perfume is strong

(c) the room has fan which circulates the perfume

(d) none of these.

A

Question 65 : The matter that has stronger inter particle forces between an iron piece and a chalk piece is:

(a) iron

(b) chalk piece

(c) both

(d) neither.

A

Question 66 : The kinetic energy of the particles of a given substance will be least in

(a) solid state

(b) liquid state

(c) gaseous state

(d) can not say.

A

Question 67 : As solid melts to form liquid:
(a) All of the above
(b) Inter particle distance increases
(c) Inter molecular forces of attraction decreases
(d) Compressibility increases

A

Question 68 : When we blow air into the balloon it inflates because:
(a) Air particles collide with the walls of the balloon and exert pressure on them
(b) Air particles diffuse into the balloon
(c) Rubber is elastic in nature
(d) The temperature of air in the balloon increases

A

Question 69 : Particles move randomly in:
(a) Water
(b) Nitrogen
(c) Sugar
(d) Dry ice

B

Question 70 : The type of motion that is present in gases is:

(a) random

(b) linear (in a straight line)

(c) vibratory

(d) circular.

A

Question 71: The physical state of matter whose volume can change significantly by changing pressure only is:

(a) solid

(b) gas

(c) liquid

(d) all three.

B

Question 72 : The physical state of matter whose volume can change significantly by changing temperature only is:

(a) solid

(b) gas

(c) liquid

(d) all three.

D

Question 73 : The density of matter will be highest in which state?

(a) solid

(b) liquid

(c) gas

(d) can not say.

A

Question 74 : which are the favourable conditions for liquefaction of petroleum gas:
(a) Low pressure, high temperature
(b) High pressure, high temperature
(c) High pressure, low temperature
(c) Low pressure, low temperature

C

Question 75 : We get the smell of hot food in the kitchen outside the house because of:
(a) Diffusion
(b) Boiling
(c) Evaporation
(d) Sublimation

A

Question 76 : In which phenomenon does water change into water vapour below its boiling point:
(a) Sublimation
(b) Boiling
(c) Freezing
(d) Evaporation

D

Question 77 : Dry ice on heating produces:
(a) Gas CO2
(b) Liquid CO2
(c) Liquid water
(d) Water vapour

A

Question 78 : Which of the following has highest density?
(a) Wood
(b) Kerosene
(c) Water
(d) Iron

D

Question 79 : latent heat of vapourisation is used to:
(a) Overcome forces of attraction between the liquid particles at the boiling point
(b) Overcome forces of attraction between solid particles at the freezing point
(c) Increase the kinetic energy of particles in the liquid state
(d) Increase the kinetic energy of the particles in the vapour phase

A

Question 80 : Evaporation of a liquid can take place:
(a) At all temperatures
(b) At its boiling point
(c) At its freezing point
(d) At a fixed temperature

A

Question 81 : The conversion of solid to gas directly is called:
(a) Evaporation
(b) Sublimation
(c) Distillation
(d) Condensation

B

Question 82 : The process of evaporation causes:
(a) Cooling
(b) Heating
(c) Dryness
(d) None of the above

A

Question 83 : Which of the following substances will undergo sublimation?
(a) Sugar
(b) Common salt
(c) Odonil
(d) Sand

C

Question 84 : During evaporation particles of a liquid change into vapours :
(a) From the surface
(b) From the bulk
(c) From the bottom
(d) From all over the liquid

A

Question 85 : At higher altitudes the boiling points of liquids
(a) Decreases
(b) Increases
(a) Increases then decreases
(d) Remains the same

C

Question 86 : Which of the following has highest intermolecular forces of attraction?
(a) Iron metal
(b) Water at room temperature
(c) CO2 gas
(d) Ethyl alcohol

A

Question 87 : The boiling point of water is:
(a) 0K at atmospheric pressure
(b) 273K at atmospheric pressure
(c) 0oC at atmospheric pressure
(d) 101oC at atmospheric pressure

D

Question 88 : Which of the following is not characteristic of solid:
(a) High compressibility
(b) High Rigidity
(c) Regular Shape
(d) High density

A

Question 89 : The state of matter where matter is condensed is:
(i) solid state
(ii) liquid state
(iii) gaseous state
(a) (i) and (iii) (b) (ii) and (iii)
(c) (i) and (ii) (d) (i), (ii) and (iii).

(iii)

Question 90 : Wet clothes are kept for drying. Which of the following does not help them in drying:
(a) Cooling the room
(c) Blowing wind over it
(d) Making the room a little warmer

A

Question 91 : Which of the following describes a liquid state:
(a) Definite volume and no specific shape
(b) Definite volume and definite shape
(c) definite shape but no definite volume
(d) neither definite shape nor definite volume

A

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