CBSE Class 9 Science Is Matter Around us Pure MCQs

Refer to CBSE Class 9 Science Is Matter Around us Pure MCQs provided below. CBSE Class 9 Science MCQs with answers available in Pdf for free download. The MCQ Questions for Class 9 Science with answers have been prepared as per the latest syllabus, CBSE books and examination pattern suggested in Class 9 by CBSE, NCERT and KVS. Multiple Choice Questions for Chapter 2 Is Matter Around Us Pure are an important part of exams for Class 9 Science and if practiced properly can help you to get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 9 Science and also download more latest study material for all subjects

MCQ for Class 9 Science Chapter 2 Is Matter Around Us Pure

Class 9 Science students should refer to the following multiple-choice questions with answers for Chapter 2 Is Matter Around Us Pure in Class 9. These MCQ questions with answers for Class 9 Science will come in exams and help you to score good marks

Chapter 2 Is Matter Around Us Pure MCQ Questions Class 9 Science with Answers

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
Answer :   C
 
Question. A mixture of oil and water can be separated by:
a. Sublimation
b. Crystallisation
c. Chromatography
d. Separating funnel
Answer :   D
 
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.
 
Question. Which one is the colloidal solution among them?
a. C
b. D
c. B
d. A
Answer :   B
 
Question. Which of these will form a clear and transparent solution:
a. A
b. B
c. A and B
d. B and D
Answer :   C
 
Question. Which of these will exhibit the Tyndall effect?
a. A and D
b. B and C
c. A and B
d. D
Answer :   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
Answer :   A
 
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
Answer :   C
 
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
c. Round bottomed flask, thermometer, fractionating column, water condenser and flask
d. Round bottomed flask, thermometer, fractionating column, air condenser and flask
Answer :   C
 
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
Answer :   B
 
Question. Different components can be separated from petroleum by:
a. FiltrationA
b. Chromatography
c. Simple distillation
d. Fractional distillation
Answer :   D
 

Question. What is the name of the metal which exists in liquid state at room temperature?
(a) Sodium
(b) Potassium
(c) Mercury
(d) Bromine

Answer :   C

Question. Mixture of two or more metals , or metals and non-metals called as…………
(a) Alloy
(b) Solution
(c) Mixture
(d) Metallic mixture

Answer :   A

Question. Sol and gel are examples of
(a) Solid-solid colloids
(b) Sol is a solid-liquid colloid and gel is liquid solid colloid
(c) Sol is solid-solid colloid and gel is solid-liquid colloid
(d) Sol is a liquid-solid colloid and gel is a solid-liquid colloid

Answer :   B

Question. Which of the following elements is not a metalloid?
(a) Boron
(b) Silicon
(c) Germanium
(d) Tungsten

Answer :   D

Question. Centrifugation do not used in………..
(a) Diagnostic laboratories
(b) Separate butter and cream
(c) To separate water and sugar
(d) Used in washing machines

Answer :   C

Question. A pure substance which is made up of only one kind of atom and cannot be broken into two or more simpler substances by physical or chemical means is referred to as
(a) a compound
(b) an element
(c) a molecule
(d) a mixture

Answer :   B

Question. Which of the following methods would you use to separate cream from milk?
(a) Fractional distillation
(b) Distillation
(c) Centrifugation
(d) Filtration

Answer :   C

Question. How one can separate ammonium chloride from a mixture containing ammonium chloride and sodium chloride?
(a) Precipitation
(b) Sublimation
(c) Chromatography
(d) Cetrifugation

Answer :   B

Question. Separation of dyes and black ink using ……………………. Method.
(a) Dissolution
(b) Chromatographic
(c) Sublimation
(d) Suspension

Answer :   B

Question. If the amount of solute contained in the solution is less than the saturation level…it called as……………
(a) Saturated solution
(b) Unsaturated solution
(c) Homogenous solution
(d) Heterogeneous solutio

Answer :   B

Question. The component of solution that dissolved in solvent called……………
(a) Solute
(b) Sugar
(c) Solvent
(d) Mixture

Answer :   C

Question. If the solution is 400 ml and solvent is 300ml so what is percentage of solute?
(a) 30
(b) 40
(c) 45
(d) 25

Answer :   D

Question. Crystallization method is used to purify………..
(a) Liquid
(b) Gas
(c) Solid
(d) Miscible liquids

Answer :   C

 

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) B

b) A

c) Both at the same speed

d) Separation of dyes is independent of the solubility in solvent

Answer: B

 

Question: Which of the following is the correct set of apparatus for fractional distillation?

a) Round bottomed flask, thermometer, fractionating column, water condenser and flask

b) Round bottomed flask, thermometer, water condenser and beaker

c) Round bottomed flask, thermometer, air condenser and beaker

d) Round bottomed flask, thermometer, fractionating column, air condenser and flask

Answer : A

 

Question: The sequence of steps for separating a mixture of salt, sand and camphor is:

a) Sublimation, adding water, filtration, evaporation

b) Adding water, filtration, evaporation, sublimation

c) Adding water, filtration, sublimation, evaporation

d) Sublimation, adding water, evaporation, filtration

Answer : A

 

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

Answer: A

 

Question: 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.

Which of these will exhibit the Tyndall effect?

a) D

b) A and D

c) B and C

d) A and B

Answer: D

 

Question: 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.

Which of these will form a clear and transparent solution:

a) A and B

b) A

c) B

d) B and D

Answer: A

 

Question: 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.

Which one is the colloidal solution among them?

a) D

b) C

c) B

d) A

Answer: D

 

Question: A mixture of oil and water can be separated by:

a) Separating funnel

b) Sublimation

c) Crystallisation

d) Chromatography

Answer: A

 

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 pressure

b) Decrease in solubility on decreasing temperature

c) Decrease in solubility on increasing temperature

d) Decrease in solubility on increasing pressure

Answer: A

 

Question: Different components can be separated from petroleum by:

a) Fractional distillation

b) FiltrationA

c) Simple distillation

d) Chromatography

Answer: A

Question. More than one kind of pure form of matter combines forming………..
(a) Texture
(b) Solution
(c) Mixture
(d) Component

Answer :   C

Question. Rusting of an article made up of iron is called
(a) corrosion and it is a physical as well as chemical change
(b) dissolution and it is a physical change
(c) corrosion and it is a chemical change
(d) dissolution and it is a chemical change

Answer :   C

Question. Air is ………………….. mixture.
(a) Heterogeneous
(b) Gas
(c) Solid
(d) Homogenous

Answer :   C

Question. Mercury and bromine are both
(a) liquid at room temperature
(b) solid at room temperature
(c) gases at room temperature
(d) both (a) and (b)

Answer :   A

Question. Foam is the example of…………
(a) Scattering light
(b) Colloids
(c) Saturated solution
(d) Unsaturated solutions

Answer :   B

Question. Chromatographic method used to separate
(a) Colors in dye
(b) Drug from blood
(c) Tea powder from factory
(d) Drugs from blood

Answer :   C

Question 2 .Which of the following is a compound?
(a) Stainless steel
(b) Bronze
(c) Graphite
(d) Hydrogen sulphide

Answer :   D

Question 7.Camphor can be purified by:
(a) Distillation
(b) Filtration
(c) Sedimentation
(d) Sublimation

Answer :   D

Question 17.Which of the following is considered to be a pure substance?
(a) Granite
(b) Sodium chloride
(c) Muddy water
(d) Milk of magnesia

Answer :   B

Question 21.To prepare iron sulphide, by heating a mixture of iron filings and sulphur powder, we should use a:
(a) Copper dish
(b) Watch glass
(c) China dish
(d) Petri dish

Answer :   C

Question 27.One common method used to separate dyes is:
(a) Filtration
(b) Distillation
(c) Chromatography
(d) Conductivity

Answer :   C

Question 31.Magnetism is most beneficial for separating:
(a) Gases and non- metallic liquids
(b) Magnetic solids and solids such as sulfur
(c) Non- metallic solids and solids such as sulfur
(d) Non- magnetic solids from non- magnetic liquids

Answer :   B

Question 11.Salt can be obtained from sea water by:
(a) Filtration
(b) Decantation
(c) Evaporation
(d) Sublimation

Answer :   C

 

Question: An atom is
(a) the smallest particle of matter known
(b) the smallest particle of a gas
(c) thesmallest indivisible particle of an element that can take part in a chemical reaction
(d) radioactive emission

Answer: A

Question: Air is regarded as a mixture because
(a) it pressure may vary
(b) its temperature may change
(c) its volume changes under different conditions
(d) its composition may vary

Answer: D

Question: Which of the following properties is different for solids, liquids and gases?
(a) movement of molecules
(b) particle size of the substance
(c) mass of the substance
(d) energy exchange

Answer: A

Question: Which of the following is an example of a mixture ?
(a) Sugar
(b) Brass
(c) CO2
(d) NO3

Answer: B

Question: Which of the following is not a chemical change ?
(a) rusting of iron
(b) converting water into steam
(c) making curd from milk
(d) heating coal

Answer: B

Question: A chemical equation is a means
(a) of representing chemical and physical properties of reactant molecules
(b) of acquiring instructions for the preparation of a compound
(c) or representing a chemical change by means of symbol and formulas
(d) of showing the kind of elements present in a mixture

Answer: C

Question: In a balanced chemical equation, the reactant side and the product side have the same number of
(a) atoms
(b) molecules
(c) ions
(d) electrons 

Answer: A 

Question: In the chemical equation,Mg + O2 –→ 2MgO, O2 represents
(a) atoms of oxygen joined together in a molecule
(b) molecules of oxygen
(c) grams of oxygen
(d) mole of oxygen

Answer: A

Question: The chemical formula of a compound does not represent
(a) the total number of atoms in one molecule of the compound
(b) the number of the molecules of the compound
(c) the state of the molecules of the compound
(d) the composition of a molecule of the compound

Answer: A

Question: Which of the following statements about a balanced chemical equation is true ?
(a) mass is conserved
(b) atoms are conserved
(c) mass as well as atoms are conserved
(d) molecules are conserved

Answer: C

Question: Boiling point of 10% aqueous solution of common salt at atmospheric pressure is
(a) 100°C
(b) > 100°C
(c) < 100°C
(d) not possible to predict

Answer: B

Question: The change of state of substance from gas to liquid is called-
(a) melting
(b) boiling
(c) condensation
(d) vaporization 

Answer: C

More Questions............................

Question: Area under a velocity-time graph gives
(a) distance travelled by a moving object
(b) acceleration of moving object
(c) retardation of a moving object
(d) time taken by a moving object

Answer: A

Question: If a body is thrown up with an initial velocity u and covers a maximum height of h, then h is equal to
(a) u2/2g
(b) u/2g
(c) 2u2g
(d) None of these

Answer: A

Question: A body is thrown vertically upwards and rises to a height of 10m. The velocity with which the body was thrown upwards is (g = 9.8 m/s2)
(a) 14 m/s
(b) 16 m/s
(c) 15 m/s
(d) 12 m/s

Answer: A

Question: A truck running along a straight line increases its speed uniformly from 30 m/s to 60 m/s over a time interval 1 min. The distance travelled during this time interval is
(a) 2700 m
(b) 900 m
(c) 1800 m
(d) 3600m

Answer: A

Question: car travels 1/3 rd distance on a straight road with a velocity of 10 km/hr, nextb1/3 rd with velocity 20 km/hr and the last 1/3 rd with velocity 60 km/hr. What is the average velocity of the car in the whole journey?
(a) 18 km/hr
(b) 6 km/hr
(c) 4 km/hr
(d) 12 km/hr

Answer: A

Question: Driver of a train travelling at 115 km/hr sees on a same track, 100m infront of him, a slow train travelling in the same direction at 25 km/ hr. The least retardation that must be applied to faster train to avoid a collision is
(a) 3.125 m/s2
(b) 2.75 m/s2
(c) 3.5 m/s2
(d) 3.0 m/s2

Answer: A

Question: Distance of the moon from the earth is 4 × 108 m. The time taken by a radar signalmn transmitted from the earth to reach the moon is
(a) 1.3 s
(b) 0.70 s
(c) 5.2 s
(d) 2.6 s

Answer: A

Question: A motor ship covers the distance of 300 km between two localities on a river in 10 hrs downstream and in 12 hrs upstream. Find the flow velocity of the river assuming that these velocities are constant.
(a) 2.5 km/hr
(b) 3.5 km/hr
(c) 2.0 km/hr
(d) 3 km/hr

Answer: A

Question: Quantum number value for 2p sub shell are
(a) n = 2, L = 0
(b) n = 2, L = 1
(c) n = 1, L = 0
(d) n = 1, L = 1

Answer : B

Question: Who discovered Neutrons?
(a) Dalton
(b) J J Thomson
(c) Chadwick
(d) Daraday

Answer : A

Question: Principle quantum number describes
(a) size of the orbital
(b) shape of the orbital
(c) spin of the orbital
(d) orientation of the orbital

Answer : A

Question: Who first proposed the atomic theory based on scientific knowledge
(a) John Dalton
(b) Robert Brown
(c) Jones Berzelius
(d) Dmitri Mendeleev

Answer : A

Question. A nuclear particle that has same mass that of a proton, but no electrical charge is
(a) nuclide
(b) electron
(c) proton
(d) isotope

Answer : B

Question: Experimentation with cathode ray led to the discovery of
(a) electron
(b) proton
(c) neutron
(d) nucleus

Answer : A

Question. In the gold foil experiment, most of the particles fired at the foil
(a) bounced back
(b) were absorbed by the foil
(c) passed through the foil
(d) combined at the foil

Answer : B

Question: Anode rays were discovered by
(a) Rutherford
(b) Goldstein
(c) J J Thomson
(d) J. Stoney

Answer : B 

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) B
(b) A
(c) Both at the same speed
(d) Separation of dyes is independent of the solubility in solvent

Answer: B 

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

Answer: A

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

Answer: A 

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

Answer: A

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

Answer: D 

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

Answer: A and B 

Question: 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:
Which one is the colloidal solution among them?
(a) D
(b) C
(c) B
(d) A

Answer: D 

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

Answer: A

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 pressure
(b) Decrease in solubility on decreasing temperature
(c) Decrease in solubility on increasing temperature
(d) Decrease in solubility on increasing pressure

Answer: A

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

Answer: A

Question: More than one kind of pure form of matter combines forming………:
(a) Texture
(b) Solution
(c) Mixture
(d) Component

Answer : C

Question: Rusting of an article made up of iron is called
(a) corrosion and it is a physical as well as chemical change
(b) dissolution and it is a physical change
(c) corrosion and it is a chemical change
(d) dissolution and it is a chemical change

Answer : C

Question: Air is …………………: mixture:
(a) Heterogeneous
(b) Gas
(c) Solid
(d) Homogenous

Answer : C

Question: Mercury and bromine are both
(a) liquid at room temperature
(b) solid at room temperature
(c) gases at room temperature
(d) both (a) and (b)

Answer : A

Question: Foam is the example of…………
(a) Scattering light
(b) Colloids
(c) Saturated solution
(d) Unsaturated solutions

Answer : B

Question: Chromatographic method used to separate
(a) Colors in dye
(b) Drug from blood
(c) Tea powder from factory
(d) Drugs from blood

Answer : C

Question : Which of the following is a compound?
(a) Stainless steel
(b) Bronze
(c) Graphite
(d) Hydrogen sulphide

Answer : D

Question : Camphor can be purified by:
(a) Distillation
(b) Filtration
(c) Sedimentation
(d) Sublimation

Answer : D

Question : Which of the following is considered to be a pure substance?
(a) Granite
(b) Sodium chloride
(c) Muddy water
(d) Milk of magnesia

Answer : B

Question :To prepare iron sulphide, by heating a mixture of iron filings and sulphur powder, we should use 
(a) Copper dish
(b) Watch glass
(c) China dish
(d) Petri dish

Answer : C

Question : One common method used to separate dyes is:
(a) Filtration
(b) Distillation
(c) Chromatography
(d) Conductivity

Answer : C

Question : Magnetism is most beneficial for separating:
(a) Gases and non- metallic liquids
(b) Magnetic solids and solids such as sulfur
(c) Non- metallic solids and solids such as sulfur
(d) Non- magnetic solids from non- magnetic liquids

Answer : B

Question : Salt can be obtained from sea water by:
(a) Filtration
(b) Decantation
(c) Evaporation
(d) Sublimation

Answer : C

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  
 
Answer : C
 
Question: A mixture of oil and water can be separated by:
(a) Sublimation
(b) Crystallisation
(c) Chromatography
(d) Separating funnel  
 
Answer : D
 
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:
 
Question: Which one is the colloidal solution among them?
(a) C
(b) D
(c) B
(d) A 
 
Answer : B
 
Question: Which of these will form a clear and transparent solution:
(a) A
(b) B
(c) A and B
(d) B and D 
 
Answer : C
 
Question: Which of these will exhibit the Tyndall effect?
(a) A and D
(b) B and C
(c) A and B
(d) D Answer : 
 
Answer : 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 Answer :
 
Answer : A
 
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
 
Answer : C
 
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
(c) Round bottomed flask, thermometer, fractionating column, water condenser and flask
(d) Round bottomed flask, thermometer, fractionating column, air condenser and flask
 
Answer : C
 
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
 
Answer: B
 
Question: Different components can be separated from petroleum by:
(a) FiltrationA
(b) Chromatography
(c) Simple distillation
(d) Fractional distillation  
 
Answer: D  

Question: What is the name of the metal which exists in liquid state at room temperature?
(a) Sodium
(b) Potassium
(c) Mercury
(d) Bromine  

Answer: c  

Question: Mixture of two or more metals , or metals and non-metals called as…………
(a) Alloy
(b) Solution
(c) Mixture
(d) Metallic mixture  

Answer : A

Question: Sol and gel are examples of
(a) Solid-solid colloids
(b) Sol is a solid-liquid colloid and gel is liquid solid colloid
(c) Sol is solid-solid colloid and gel is solid-liquid colloid
(d) Sol is a liquid-solid colloid and gel is a solid-liquid colloid 

Answer: B

Question: Which of the following elements is not a metalloid?
(a) Boron
(b) Silicon
(c) Germanium
(d) Tungsten 

Answer : D

Question: Centrifugation do not used in………
(a) Diagnostic laboratories
(b) Separate butter and cream
(c) To separate water and sugar
(d) Used in washing machines 

Answer : C

Question: A pure substance which is made up of only one kind of atom and cannot be broken into two or more simpler substances by physical or chemical means is referred to as
(a) a compound
(b) an element
(c) a molecule
(d) a mixture 

Answer : B

Question: Which of the following methods would you use to separate cream from milk?
(a) Fractional distillation
(b) Distillation
(c) Centrifugation
(d) Filtration 

Answer : C

Question: How one can separate ammonium chloride from a mixture containing ammonium chloride and sodium chloride?
(a) Precipitation
(b) Sublimation
(c) Chromatography
(d) Cetrifugation  

Answer : B

Question: Separation of dyes and black ink using ……………………: Method
(a) Dissolution
(b) Chromatographic
(c) Sublimation
(d) Suspension 

Answer : B

Question: If the amount of solute contained in the solution is less than the saturation level…it called as……………
(a) Saturated solution
(b) Unsaturated solution
(c) Homogenous solution
(d) Heterogeneous solutio 

Answer : B

Question: The component of solution that dissolved in solvent called……………
(a) Solute
(b) Sugar
(c) Solvent
(d) Mixture 

Answer : C

Question: If the solution is 400 ml and solvent is 300ml so what is percentage of solute?
(a) 30
(b) 40
(c) 45
(d) 25 

Answer : D

Question: Crystallization method is used to purify………
(a) Liquid
(b) Gas
(c) Solid
(d) Miscible liquids 

Answer : C

Question: A body goes from A to B with a velocity of 20 m/s and comes back B to A with a velocity of 30 m/s. The average velocity of the body during the whole journey is
(a) zero
(b) 25 m/s
(c) 24 m/s
(d) none of these 

Answer: A

Question: If an object covering distances in direct proportion to the square of the time lapsed, then the acceleration is
(a) constant
(b) increasing
(c) decreasing
(d) none of these

Answer: A

Question: Distance travelled by a freely falling body is proportional to
(a) time of fall
(b) square of the time of fall
(c) square of the acceleration due to gravity
(d) mass of the body

Answer: B

Question: The rate of change of displacement with time is
(a) velocity
(b) acceleration
(c) speed
(d) retardation

Answer: A

Question: Which of the following is not vector quantity?
(a) Retardation
(b) Average speed
(c) Acceleration due to gravity
(d) Displacement

Answer: D 

Question: If the time-displacement graph of a particle is parallel to the time-axis, then velocity of the particle is
(a) zero
(b) equal to acceleration of the body
(c) unity
(d) infinity

Answer: A

Question: In the velocity-time graph, AB shows that the body has 

(a) initial velocity OA and is moving with uniform retardation
(b) uniform speed
(c) non-uniform retardation
(d) uniform acceleration

Answer: A

Question: In the given velocity-time graph, AB shows that the body has

(a) uniform velocity throughout its motion and has zero initial velocity
(b) none of these
(c) uniform retardation
(d) uniform acceleration

Answer: B

Question: If the displacement-time graph for the two particles A and B are straight lines inclined at angles of 30° and 60° with the time axis, then ratio of the velocities vA: vB will be

(a) 3: 1
(b) 1 : 3
(c) 1 : 2
(d) none of these

Answer: A

More Questions.......................... 

Question: In the given figure, velocity of the body at A is

(a) zero
(b) maximum
(c) infinite
(d) unity

Answer: A

Question: The velocity-time graph for a body with nonuniform motion is a
(a) straight line parallel to x-axis
(b) curved line
(c) straight line parallel to y-axis
(d) none of these

Answer: B

Question: A motor ship covers the distance of 300 km between two localities on a river in 10 hrs downstream and in 12 hrs upstream. Find the flow velocity of the river assuming that these velocities are constant
(a) 2.5 km/hr
(b) 3.5 km/hr
(c) 2.0 km/hr
(d) 3 km/hr

Answer: A

Question: A stone is dropped into a well in which the level of water is h, below the top of the well. If v is velocity of sound, then time T after which the splash is heard is equal to
(a)


(b)


(c)


(d) None of these

Answer: 

Question: A stone weighing 3 kg falls from the top of a tower 100 m high and buries itself 2 m deep in the sand. The time of penetration is
(a) 0.09 sec
(b) 2.1 sec
(c) 0.9 sec
(d) 1.3 sec

Answer: A

Question: The velocity of a body at any instant is 10 m/s. After 5 sec, velocity of the particle is 20 m/s. The velocity at 3 seconds before is
(a) 6 m/sec
(c) 4 m/sec
(b) 7 m/sec
(d) 8 m/sec

Answer: C

Question: A body covers 200 cm in the first 2 sec.and 220 cm in next 4 sec. What is the velocity of the body at the' end of 7th second?
(a) 10 cm/sec
(b) 40 cm/sec
(c) 20 cm/sec
(d) 5 cm/sec

Answer: A

Question: A stone is thrown vertically upward with an initial velocity u from the top of a tower, reaches the ground with a velocity 3u. The height of the tower is
(a) 3 u2/g
(b) 4 u2/g
(c) 9 u2/g
(d) 6 u2/g

Answer: B

Question: Acceleration of a body projected upwards with a certain velocity is
(a) – 9.8 m/s2
(b) zero
(c) insufficient data
(d) 9.8 m/s2

Answer: – A 

Question: The earth's radius is 6400 km. It makes one revolution about its own axis in 24 hrs. The centripetal acceleration of a point on its equator is nearly
(a) 3.4 cm/s2
(b) 340 cm/s2
(c) 34 cm/s2
(d) 0.34 cm/s2

Answer: A 

Question: The acceleration of a point on the rim of flywheel 1 m in diameter, if it makes 1200 revolutions per minute is
(a)


(b)


(c)


(d) none of these

Answer: 

Question: If two bodies of different masses m1 and m2 are dropped from different heights h1 and h2, then ratio of the times taken by the two to drop through these distances is :-
(a) √h1 : √h2
(b) h2/h1
(c) h2 : h1
(d) None of these

Answer: A 

Question: Name the instrument used to measure instantaneous speed of a vehicle
(a) Speedometer
(b) Multicenter
(c) Accelerator
(d) Ammeter

Answer: A

Question: A ball is dropped on the floor from a height of 10 m. It rebounds to a height of 2.5 m. If the ball is in contact with the floor for 0.01 sec, then average acceleration during contact is :-
(a) 2100 m/s2
(b) 1400 m/s2
(c) 700 m/s2
(d) 400 m/s2

Answer: A

Question: If a ball is thrown up with a certain velocity. It attains a height of 40 m and comes back to the thrower, then
(a) total distance covered by it is zero
(b) total displacement is zero
(c) total displacement covered by it is 80 m
(d) total distance covered by it is 40 m

Answer: B

Question: If a body of mass 0.10 kg is moving on circular path of diameter 1.0 m at the rate of 10 revolutions per 31.4 sec, then centripetal force acting on the body (n = 3.14) is
(a) 0.2 Newton
(b) 0.02 Newton
(c) 2.0 Newton
(d) 20.0 Newton

Answer: A

Question: A phonograph record on turn table rotates at 30 rpm. The linear speed of a point on therecord at the needle at the beginning of the recording when it is at a distance of 14 cm from the centre is
(a) 44 cm/sec
(b) 52 cm/sec
(c) 48 cm/sec
(d) 22 cm/sec

Answer: A

Question: The relationship between average speed, time and distance is
(b) Time = average speed/distance
(c) Distance = average speed × time
(a) Average speed = distance × time
(d) Average speed =total distance / total time

Answer: D

Question: A body moving along a circular path has
(a) constant speed
(b) constant velocity
(c) no radial acceleration
(d) no tangential velocity

Answer: A

Question: A rubber ball dropped from a certain height
(a) non-uniform speed
(b) uniform speed
(c) uniform retardation
(d) uniform acceleration

Answer: A

Question: If the velocity of a body does not change, its acceleration is
(a) zero
(b) unity
(c) infinite
(d) none of these

Answer: A

Question: When the distance an object travels is directly proportional to the length of time, it is said to travel with
(a) constant speed
(b) zero velocity
(c) constant acceleration
(d) uniform velocity

Answer: A

Question: A body moves on three quarters of a circle of radius r. The displacement and distance travelled by it are:-
(a)


(b) displacement = r, distance = 3r
(c)


(d)


Answer: 

Question: If two bodies of different masses m1 and m2 are dropped from different heights h1 and h2, then ratio of the times taken by the two to drop through these distances is :-
(a) √h1 : √h2
(b) h2/h1
(c) h2 : h1
(d) None of these

Answer: A 

Question: Name the instrument used to measure instantaneous speed of a vehicle
(a) Speedometer
(b) Multicenter
(c) Accelerator
(d) Ammeter

Answer: A

Question: A ball is dropped on the floor from a height of 10 m. It rebounds to a height of 2.5 m. If the ball is in contact with the floor for 0.01 sec, then average acceleration during contact is :-
(a) 2100 m/s2
(b) 1400 m/s2
(c) 700 m/s2
(d) 400 m/s2

Answer: A 

Question: If a ball is thrown up with a certain velocity. It attains a height of 40 m and comes back to the thrower, then
(a) total distance covered by it is zero
(b) total displacement is zero
(c) total displacement covered by it is 80 m     
(d) total distance covered by it is 40 m

Answer: B

Question: If a body of mass 0.10 kg is moving on circular path of diameter 1.0 m at the rate of 10 revolutions per 31.4 sec, then centripetal force acting on the body (n = 3.14) is
(a) 0.2 Newton
(b) 0.02 Newton
(c) 2.0 Newton
(d) 20.0 Newton

Answer: A

Question: A phonograph record on turn table rotates at 30 rpm. The linear speed of a point on therecord at the needle at the beginning of the recording when it is at a distance of 14 cm from the centre is
(a) 44 cm/sec
(b) 52 cm/sec
(c) 48 cm/sec
(d) 22 cm/sec

Answer: A

Question: The relationship between average speed, time and distance is
(a) Average speed =total distance / total time
(b) Time = average speed/distance
(c) Distance = average speed × time
(d) Average speed = distance × time

Answer: A

Question: A body moving along a circular path has
(a) no tangential velocity
(b) constant velocity
(c) no radial acceleration      
(d) constant speed

Answer: D

Question: A rubber ball dropped from a certain height
(a) non-uniform speed
(b) uniform speed
(c) uniform retardation
(d) uniform acceleration

Answer: A

Question: If the velocity of a body does not change, its acceleration is
(a) zero
(b) unity
(c) infinite
(d) none of these

Answer: A

Question: When the distance an object travels is directly proportional to the length of time, it is said to travel with
(a) constant speed
(b) zero velocity
(c) constant acceleration
(d) uniform velocity

Answer: A

Question: A body moves on three quarters of a circle of radius r. The displacement and distance travelled by it are:-
(a)


(b) displacement = r, distance = 3r
(c)

(d)

Answer:

 

Question: A body goes from A to B with a velocity of 20 m/s and comes back B to A with a velocity of 30 m/s. The average velocity of the body during the whole journey is

a) zero

b) 25 m/s

c) 24 m/s

d) none of these

Answer: zero

 

Question: If an object covering distances in direct proportion to the square of the time lapsed, then the acceleration is

a) constant

b) increasing

c) decreasing

d) none of these

Answer: constant

 

Question: Distance travelled by a freely falling body is proportional to

a) square of the time of fall

b) time of fall

c) square of the acceleration due to gravity

d) mass of the body

Answer: square of the time of fall

 

Question: The rate of change of displacement with time is

a) velocity

b) acceleration

c) speed

d) retardation

Answer: velocity

 

Question: Which of the following is not vector quantity?

a) Displacement

b) Average speed

c) Acceleration due to gravity

d) Retardation

Answer: Displacement

 

Question: If the time-displacement graph of a particle is parallel to the time-axis, then velocity of the particle is

a) zero

b) equal to acceleration of the body

c) unity

d) infinity

Answer: zero

 

Question: In the velocity-time graph, AB shows that the body has

a) initial velocity OA and is moving with uniform retardation

b) uniform speed

c) non-uniform retardation

d) uniform acceleration

Answer: initial velocity OA and is moving with uniform retardation

 

Question: In the given velocity-time graph, AB shows that the body has

a) none of these

b) uniform velocity throughout its motion and has zero initial velocity

c) uniform retardation

d) uniform acceleration

Answer: none of these

 

Question: If the displacement-time graph for the two particles A and B are straight lines inclined at angles of 30° and 60° with the time axis, then ratio of the velocities vA: vB will be

a) 3: 1

b) 1 : 3

c) 1 : 2

d) none of these

Answer: 3: 1

 

More Questions..........................

 

Question: In the given figure, velocity of the body at A is

a) zero

b) maximum

c) infinite

d) unity

Answer: zero

 

Question: The velocity-time graph for a body with nonuniform motion is a

a) curved line

b) straight line parallel to x-axis

c) straight line parallel to y-axis

d) none of these

Answer: curved line

 

Question: A motor ship covers the distance of 300 km between two localities on a river in 10 hrs downstream and in 12 hrs upstream. Find the flow velocity of the river assuming that these velocities are constant

a) 2.5 km/hr

b) 3.5 km/hr

c) 2.0 km/hr

d) 3 km/hr

Answer: 2.5 km/hr

 

Question: A stone is dropped into a well in which the level of water is h, below the top of the well. If v is velocity of sound, then time T after which the splash is heard is equal to

a)

b)

c)

d) None of these

Answer:

 

Question: A stone weighing 3 kg falls from the top of a tower 100 m high and buries itself 2 m deep in the sand. The time of penetration is

a) 0.09 sec

b) 2.1 sec

c) 0.9 sec

d) 1.3 sec

Answer: 0.09 sec

 

Question: The velocity of a body at any instant is 10 m/s. After 5 sec, velocity of the particle is 20 m/s. The velocity at 3 seconds before is

a) 4 m/sec

b) 7 m/sec

c) 6 m/sec

d) 8 m/sec

Answer: 4 m/sec

 

Question: A body covers 200 cm in the first 2 sec.and 220 cm in next 4 sec. What is the velocity of the body at the' end of 7th second?

a) 10 cm/sec

b) 40 cm/sec

c) 20 cm/sec

d) 5 cm/sec

Answer: 10 cm/sec

 

Question: A stone is thrown vertically upward with an initial velocity u from the top of a tower, reaches the ground with a velocity 3u. The height of the tower is

a) 4 u2/g

b) 3 u2/g

c) 9 u2/g

d) 6 u2/g

Answer: 4 u2/g

 

Question: Acceleration of a body projected upwards with a certain velocity is

a) – 9.8 m/s2

b) zero

c) insufficient data

d) 9.8 m/s2

Answer: – 9.8 m/s2

 

Question: The earth's radius is 6400 km. It makes one revolution about its own axis in 24 hrs. The centripetal acceleration of a point on its equator is nearly

a) 3.4 cm/s2

b) 340 cm/s2

c) 34 cm/s2

d) 0.34 cm/s2

Answer: 3.4 cm/s2

 

Question: The acceleration of a point on the rim of flywheel 1 m in diameter, if it makes 1200 revolutions per minute is

a)

b)

c)

d) none of these

Answer:

 

Question: If two bodies of different masses m1 and m2 are dropped from different heights h1 and h2, then ratio of the times taken by the two to drop through these distances is :-

a) √h1 : √h2

b) h2/h1

c) h2 : h1

d) None of these

Answer: √h1 : √h2

 

Question: Name the instrument used to measure instantaneous speed of a vehicle

a) Speedometer

b) Multicenter

c) Accelerator

d) Ammeter

Answer: Speedometer

 

Question: A ball is dropped on the floor from a height of 10 m. It rebounds to a height of 2.5 m. If the ball is in contact with the floor for 0.01 sec, then average acceleration during contact is :-

a) 2100 m/s2

b) 1400 m/s2

c) 700 m/s2

d) 400 m/s2

Answer: 2100 m/s2

 

Question: If a ball is thrown up with a certain velocity. It attains a height of 40 m and comes back to the thrower, then

a) total displacement is zero

b) total distance covered by it is zero

c) total displacement covered by it is 80 m

d) total distance covered by it is 40 m

Answer: total displacement is zero

 

Question: If a body of mass 0.10 kg is moving on circular path of diameter 1.0 m at the rate of 10 revolutions per 31.4 sec, then centripetal force acting on the body (n = 3.14) is

a) 0.2 Newton

b) 0.02 Newton

c) 2.0 Newton

d) 20.0 Newton

Answer: 0.2 Newton

 

Question: A phonograph record on turn table rotates at 30 rpm. The linear speed of a point on therecord at the needle at the beginning of the recording when it is at a distance of 14 cm from the centre is

a) 44 cm/sec

b) 52 cm/sec

c) 48 cm/sec

d) 22 cm/sec

Answer: 44 cm/sec

 

Question: The relationship between average speed, time and distance is

a) Average speed =total distance / total time

b) Time = average speed/distance

c) Distance = average speed × time

d) Average speed = distance × time

Answer: Average speed =total distance / total time

 

Question: A body moving along a circular path has

a) constant speed

b) constant velocity

c) no radial acceleration

d) no tangential velocity

Answer: constant speed

 

Question: A rubber ball dropped from a certain height

a) non-uniform speed

b) uniform speed

c) uniform retardation

d) uniform acceleration

Answer: non-uniform speed

 

Question: If the velocity of a body does not change, its acceleration is

a) zero

b) unity

c) infinite

d) none of these

Answer: zero

 

Question: When the distance an object travels is directly proportional to the length of time, it is said to travel with

a) constant speed

b) zero velocity

c) constant acceleration

d) uniform velocity

Answer: constant speed

 

Question: A body moves on three quarters of a circle of radius r. The displacement and distance travelled by it are:-

a)

b) displacement = r, distance = 3r

c)

d)

Answer:

 

Question: If two bodies of different masses m1 and m2 are dropped from different heights h1 and h2, then ratio of the times taken by the two to drop through these distances is :-

a) √h1 : √h2

b) h2/h1

c) h2 : h1

d) None of these

Answer: √h1 : √h2

 

Question: Name the instrument used to measure instantaneous speed of a vehicle

a) Speedometer

b) Multicenter

c) Accelerator

d) Ammeter

Answer: Speedometer

 

Question: A ball is dropped on the floor from a height of 10 m. It rebounds to a height of 2.5 m. If the ball is in contact with the floor for 0.01 sec, then average acceleration during contact is :-

a) 2100 m/s2

b) 1400 m/s2

c) 700 m/s2

d) 400 m/s2

Answer: 2100 m/s2

 

Question: If a ball is thrown up with a certain velocity. It attains a height of 40 m and comes back to the thrower, then

a) total displacement is zero

b) total distance covered by it is zero

c) total displacement covered by it is 80 m

d) total distance covered by it is 40 m

Answer: total displacement is zero

 

Question: If a body of mass 0.10 kg is moving on circular path of diameter 1.0 m at the rate of 10 revolutions per 31.4 sec, then centripetal force acting on the body (n = 3.14) is

a) 0.2 Newton

b) 0.02 Newton

c) 2.0 Newton

d) 20.0 Newton

Answer: 0.2 Newton

 

Question: A phonograph record on turn table rotates at 30 rpm. The linear speed of a point on therecord at the needle at the beginning of the recording when it is at a distance of 14 cm from the centre is

a) 44 cm/sec

b) 52 cm/sec

c) 48 cm/sec

d) 22 cm/sec

Answer: 44 cm/sec

 

Question: The relationship between average speed, time and distance is

a) Average speed =total distance / total time

b) Time = average speed/distance

c) Distance = average speed × time

d) Average speed = distance × time

Answer: Average speed =total distance / total time

 

Question: A body moving along a circular path has

a) constant speed

b) constant velocity

c) no radial acceleration

d) no tangential velocity

Answer: constant speed

 

Question: A rubber ball dropped from a certain height

a) non-uniform speed

b) uniform speed

c) uniform retardation

d) uniform acceleration

Answer: non-uniform speed

 

Question: If the velocity of a body does not change, its acceleration is

a) zero

b) unity

c) infinite

d) none of these

Answer: zero

 

Question: When the distance an object travels is directly proportional to the length of time, it is said to travel with

a) constant speed

b) zero velocity

c) constant acceleration

d) uniform velocity

Answer: constant speed

 

Question: A body moves on three quarters of a circle of radius r. The displacement and distance travelled by it are:-

a)

b) displacement = r, distance = 3r

c)

d)

Answer:

 

Chapter 01 Matter in Our Surroundings
CBSE Class 9 Science Matter In Our Surroundings MCQs
Chapter 02 Is Matter Around Us Pure
CBSE Class 9 Science Is Matter Around us Pure MCQs
Chapter 03 Atoms and Molecules
CBSE Class 9 Science Atoms and Molecules MCQs
Chapter 04 Structure of the Atom
CBSE Class 9 Science Structure of Atom MCQs
Chapter 05 Periodic Classification of Elements
CBSE Class 9 Science Periodic Classification of Elements MCQs
Chapter 05 The Fundamental Unit of Life
CBSE Class 9 Science The Fundamental Unit of Life MCQs
Chapter 07 Diversity in Living Organisms
CBSE Class 9 Science Diversity In Living Organisms MCQs
Chapter 09 Force and Laws of Motion
CBSE Class 9 Science Force and Laws of Motion MCQs
Chapter 13 Why Do We Fall Ill
CBSE Class 9 Science Why Do We Fall Ill MCQs
Chapter 14 Natural Resources
CBSE Class 9 Science Natural Resources MCQs
Chapter 15 Improvement in Food Resources
CBSE Class 9 Science Improvement In Food Resources MCQs

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