# CBSE Class 9 Science Matter In Our Surroundings MCQs

## MCQ for Class 9 Science Matter In Our Surroundings

Class 9 Science students should refer to the following multiple-choice questions with answers for Matter In Our Surroundings in standard 9. These MCQ questions with answers for Grade 9 Science will come in exams and help you to score good marks

### Matter In Our Surroundings MCQ Questions Class 9 Science with Answers

Question: 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

Question: 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

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

Question: 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.

Question: 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.

Question: 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

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

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

Question: 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

Question: 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

Question: 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

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

Question : 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

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

Question : 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

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

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

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

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

Question : 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

Question : 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

Question : 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

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

Question : 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

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

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

Question : 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

Question : 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

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

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

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

Question : 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

Question : When a bottle of soda water is opened, carbon dioxide escapes, producing a fizz. This is due to:
(a) Decrease in solubility on decreasing temperature
(b) Decrease in solubility on increasing temperature
(c) Decrease in solubility on decreasing pressure
(d) Decrease in solubility on increasing pressure

Question. A mixture of oil and water can be separated by:
(a) Sublimation
(b) Crystallisation
(c) Chromatography
(d) Separating funnel

Questions 3 to 5 are based on the following information:
Four samples A, B, C, D are prepared by adding a pinch of copper sulphate, a spatula of copper sulphate, a spatula of chalk powder, and some milk, to water respectively.
3. Which one is the colloidal solution among them?

(a) C
(b) D
(c) B
(d) A

Question. Which of these will form a clear and transparent solution:
(a) A
(b) B
(c) A and B
(d) B and D

Question. Which of these will exhibit the Tyndall effect?
(a) A and D
(b) B and C
(c) A and B
(d) D

Question. Which of the following represents a chemical change?
(a) Extraction of copper from copper pyrites
(b) Distillation of water
(c) Melting of wax
(d) Dissolution of salt in water

Question. The sequence of steps for separating a mixture of salt, sand and camphor is:
(a) Adding water, filtration, evaporation, sublimation
(b) Adding water, filtration, sublimation, evaporation
(c) Sublimation, adding water, filtration, evaporation
(d) Sublimation, adding water, evaporation, filtration

Question : Which of the following is the correct set of apparatus for fractional distillation?
(a) Round bottomed flask, thermometer, water condenser and beaker
(b) Round bottomed flask, thermometer, air condenser and beaker

Question : In the separation of dyes A and B by chromatography, component B has more solubility in the solvent. Which component will rise faster?
(a) A
(b) B
(c) Both at the same speed
(d) Separation of dyes is independent of the solubility in solvent

Question : Different components can be separated from petroleum by:
(a) FiltrationA
(b) Chromatography
(c) Simple distillation
(d) Fractional distillation

Question: 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

Question: 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

Question: 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

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

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

Question: 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

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

Question: 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

Question: 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.

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

Question: 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

Question: 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

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

Question: 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: 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.

Question: 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

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

Question: 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

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

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

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

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

Question: 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

Question: 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

Question: 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

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

Question: 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

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

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

Question: 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

Question: 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

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

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

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

Question: 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

Question: 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.

Question: Liquids have ______ shape and _____ volume.
(a) definite, definite
(b) definite, indefinite
(c) indefinite, definite
(d) indefinite, indefinite.

Question: The inter particle distances are maximum in _________ and minimum in ___________
(a) solids, liquids
(b) solids, gases
(c) gases, solids
(d) liquids, solids.

Question: The inter particle forces of attraction is maximum in _______ and minimum in ______
(a) solids, liquids
(b) solids, gases
(c) gases, solids
(d) liquids, solids.

Question: Conversion of solid to gas is called
(a) vapourisation
(b) condensation
(c) liquefaction
(d) sublimation.

Question: The conversion that takes place at room temperature is
(a) boiling
(b) evaporation
(c) melting
(d) freezing.

Question: 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.

Question: 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.

Question: The formula of hydroxide radical is:
(a) H+
(b) H3O+
(c) OH–
(d) H–.

Question: Which is not a pure substance in the four options given?
(a) alloy
(b) sugar
(c) distilled water
(d) copper wire.

Question: 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)

Question: 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.

Question: 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.

Question: 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.

Question: 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.

Question: 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.

Question: 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.

Question: The type of motion that is present in solids is:
(a) random
(b) linear (in a straight line)
(c) vibratory
(d) circular.

Question: The type of motion that is present in liquids is:
(a) random
(b) linear (in a straight line)
(c) vibratory
(d) circular.

Question: The type of motion that is present in gases is:
(a) random
(b) linear (in a straight line)
(c) vibratory
(d) circular.

Question: The physical state of matter whose volume can change significantly by changing pressure only is:
(a) solid
(b) gas
(c) liquid
(d) all three.

Question: The physical state of matter whose volume can change significantly by changing temperature only is:
(a) solid
(b) gas
(c) liquid
(d) all three.

Question: The density of matter will be highest in which state?
(a) solid
(b) liquid
(c) gas
(d) can not say.

Question: 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.

Question: 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

Question: 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

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

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

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

Question: 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

Question: 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

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

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

Question: 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

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

Question: 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

Question: 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

Question: 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

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

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

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

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

Question: 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

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

Question: 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).

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