Extra 40 multiple-choice questions (MCQs) with answers on the Chapter:5 Separation of Substances for Class 6 CBSE Science:-
Which of the following methods is used to separate husk from grains?
a) Winnowing
b) Filtration
c) Evaporation
d) Distillation
Ans:
a) Winnowing
Which method is used to separate heavier and lighter components of a mixture by wind or blowing air?
a) Sieving
b) Winnowing
c) Filtration
d) Hand-picking
Ans:
b) Winnowing
Which process is used to remove insoluble impurities from water?
a) Sedimentation
b) Filtration
c) Evaporation
d) Decantation
Ans:
b) Filtration
In which method do heavier particles settle down in a liquid?
a) Sedimentation
b) Evaporation
c) Filtration
d) Sieving
Ans:
a) Sedimentation
Which of the following methods is used to separate iron fillings from sand?
a) Hand-picking
b) Magnetic separation
c) Winnowing
d) Sieving
Ans:
b) Magnetic separation
Which method is used to separate sand and salt from their mixture?
a) Filtration and evaporation
b) Hand-picking
c) Sieving
d) Winnowing
Ans:
a) Filtration and evaporation
What is used to separate solid particles of different sizes?
a) Filtration
b) Sedimentation
c) Sieving
d) Evaporation
Ans:
c) Sieving
The process of changing a liquid into vapor is called:
a) Decantation
b) Evaporation
c) Sedimentation
d) Filtration
Ans:
b) Evaporation
Which separation method is used in tea making to remove tea leaves?
a) Decantation
b) Filtration
c) Evaporation
d) Sieving
Ans:
b) Filtration
The method of removing impurities by passing the mixture through a filter paper is called:
a) Sieving
b) Winnowing
c) Filtration
d) Sedimentation
Ans:
c) Filtration
Churning of milk is used to separate:
a) Salt
b) Butter
c) Water
d) Dust
Ans:
b) Butter
Which process is used to separate a soluble solid from its liquid solution?
a) Filtration
b) Evaporation
c) Sieving
d) Winnowing
Ans:
b) Evaporation
Which of the following methods is used to separate stones from rice?
a) Winnowing
b) Sieving
c) Hand-picking
d) Filtration
Ans:
c) Hand-picking
Decantation is used to separate:
a) Soluble substances
b) Immiscible liquids
c) Butter from milk
d) Stones from rice
Ans:
b) Immiscible liquids
Which process is involved in obtaining salt from seawater?
a) Filtration
b) Sedimentation
c) Evaporation
d) Decantation
Ans:
c) Evaporation
Which method is commonly used in flour mills to separate impurities from wheat?
a) Winnowing
b) Sieving
c) Filtration
d) Hand-picking
Ans:
b) Sieving
The method used to separate oil and water is:
a) Winnowing
b) Decantation
c) Filtration
d) Sieving
Ans:
b) Decantation
Separation of substances is necessary to:
a) Remove harmful components
b) Obtain useful substances
c) Purify mixtures
d) All of the above
Ans:
d) All of the above
A mixture of sugar and water can be separated by:
a) Sieving
b) Decantation
c) Evaporation
d) Hand-picking
Ans:
c) Evaporation
Which method is used to separate small pebbles from flour?
a) Sieving
b) Decantation
c) Filtration
d) Winnowing
Ans:
a) Sieving
Which method is used to separate pure water from saltwater?
a) Filtration
b) Distillation
c) Sedimentation
d) Decantation
Ans:
b) Distillation
Churning is used in the preparation of:
a) Cheese
b) Butter
c) Sugar
d) Flour
Ans:
b) Butter
Filtration is used to separate:
a) Sugar and water
b) Mud from water
c) Oil from water
d) Salt from water
Ans:
b) Mud from water
Which method is used to remove soluble impurities from water?
a) Filtration
b) Boiling
c) Sieving
d) Winnowing
Ans:
b) Boiling
Evaporation leaves behind:
a) Water
b) Solute
c) Air
d) Gas
Ans:
b) Solute
What happens in the process of sedimentation?
a) Light particles float
b) Heavier particles settle
c) Water evaporates
d) Salt dissolves
Ans:
b) Heavier particles settle
Which process is used to make water fit for drinking?
a) Sieving
b) Filtration
c) Winnowing
d) Hand-picking
Ans:
b) Filtration
Which method is used to separate impurities from pulses before cooking?
a) Sieving
b) Hand-picking
c) Winnowing
d) Sedimentation
Ans:
b) Hand-picking
Filtration is most useful in:
a) Separating soluble substances
b) Separating insoluble substances
c) Separating gases
d) Separating sugar from tea
Ans:
b) Separating insoluble substances
Which method is NOT a separation technique?
a) Decantation
b) Filtration
c) Sieving
d) Burning
Ans:
d) Burning
Which
method is used to separate chalk powder from water?
a) Decantation
b) Filtration
c) Evaporation
d) Sieving
Ans:
b) Filtration
A
mixture of sand and iron filings can be best separated by:
a) Hand-picking
b) Filtration
c) Magnetic separation
d) Sedimentation
Ans:
c) Magnetic separation
Which
of the following methods is used to separate cream from milk?
a) Sieving
b) Churning
c) Filtration
d) Winnowing
Ans:
b) Churning
Why
is sieving used in flour mills?
a) To remove husk and larger particles
b) To separate sugar and salt
c) To remove water from flour
d) To mix different grains
Ans:
a) To remove husk and larger particles
Which
of the following is an example of the sedimentation process?
a) Separating tea leaves from tea
b) Sand settling at the bottom of water
c) Butter separating from milk
d) Salt dissolving in water
Ans:
b) Sand settling at the bottom of water
Which
method is used to separate rice grains from water after washing?
a) Sieving
b) Filtration
c) Decantation
d) Winnowing
Ans:
c) Decantation
Which
of the following mixtures can be separated by hand-picking?
a) Rice and stones
b) Water and salt
c) Milk and cream
d) Sugar and water
Ans:
a) Rice and stones
Which
process is used to separate a dissolved solid from a liquid by heating?
a) Sedimentation
b) Evaporation
c) Decantation
d) Filtration
Ans:
b) Evaporation
What
happens when muddy water is left undisturbed for some time?
a) The mud dissolves in water
b) The mud settles down due to sedimentation
c) The water becomes dirty
d) The mud evaporates
Ans:
b) The mud settles down due to sedimentation
Which
of the following methods is used to separate the components of air?
a) Distillation
b) Filtration
c) Magnetic separation
d) Sieving
Ans:
a) Distillation
