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Worksheets

Separation of Substances

Total questions: 170

Worksheet time: 1hrs 29mins

Name
Class
Date
1.

What is the process of separating cream from milk by churning called?

a)

Blending

b)

Buttering

c)

Churning

d)

Whipping

2.

Which type of substance contains only one type of particle?

a)

Element

b)

Mixture

c)

Compound

d)

Solution

3.

What is a substance that contains more than one type of particle known as?

a)

mixture

b)

solution

c)

element

d)

compound

4.

What is the process of a solid changing directly into a gas without passing through the liquid state?

a)

Condensation

b)

Vaporization

c)

Melting

d)

Sublimation

5.

In a solution, what is the component that is dissolved in the solvent called?

a)

solute

b)

solvent

c)

diluent

d)

mixture

6.

What is the process of changing a gas into a liquid state called?

a)

Evaporation

b)

Sublimation

c)

Solidification

d)

Condensation

7.

Which method of separation is used to separate heavier and lighter components of a mixture by wind or blowing air?

a)

Distillation

b)

Sifting

c)

Blending

d)

Winnowing

8.

Which method of separation is used to separate grains from the harvested crop?

a)

Plowing

b)

Sieving

c)

Winnowing

d)

Threshing

9.

Which method of separation involves manually picking out unwanted substances from a mixture?

a)

handpicking

b)

grabbing

c)

sorting

d)

scooping

10.

What is the process of separating lighter husk particles from heavier grains by wind called?

a)

Winnowing

b)

Sifting

c)

Sorting

d)

Blending

11.

Which method of separation involves beating the harvested crop to separate grains from the stalks?

a)

Winnowing

b)

Threshing

c)

Fermentation

d)

Sieving

12.

What is the process of separating substances based on their physical properties such as size, shape, or color?

a)

Evaporation

b)

Filtration

c)

Chromatography

d)

Distillation

13.

What is the process of separating a solid from a liquid by allowing the liquid to evaporate and leaving behind the solid residue?

a)

Condensation

b)

Filtration

c)

Sublimation

d)

Evaporation

14.

Which method of separation is used to separate a soluble solid from a liquid by heating the liquid and collecting the solid residue upon cooling?

a)

Sublimation

b)

Crystallization

c)

Decantation

d)

Filtration

15.

What is the process of separating a liquid from a solution by heating the solution and collecting the condensed liquid upon cooling?

a)

Filtration

b)

Condensation

c)

Distillation

d)

Evaporation

16.

NIMBU PAANI/LEMONADE IS A MIXTURE OF

a)

LEMON JUICE AND WATER

b)

LEMON JUICE AND SUGAR

c)

LEMON JUICE, SUGAR AND WATER

17.

TAP WATER IS A MIXTURE OF

a)

WATER AND MANY DISSOLVED SALTS

b)

SUGAR AND WATER

c)

RAIN WATER AND CREAM

18.

SEA WATER IS A MIXTURE OF

a)

WATER AND COMMON SALT

b)

WATER AND SEVERAL SALTS

c)

WATER AND OXYGEN

19.

WOOD IS A MIXTURE OF

a)

WATER AND CREAM

b)

WATER AND CELLULOSE

c)

WATER AND SUGAR

20.

MIXTURES ARE MADE UP OF

a)

TWO OR MORE ELEMENTS

b)

TWO OR MORE ELEMENTS AND COMPOUNDS

c)

TWO OR MORE COMPOUNDS

d)

ANY OF THE ABOVE

21.

AIR IS A MIXTURE OF

a)

SEVERAL GASES

b)

WATER VAPOURS AND SMOKE PARTICLES

c)

DUST

d)

ALL OF THE ABOVE

22.

CONSTITUENTS OF MIXTURE ARE EVENLY SPREAD IN

a)

HOMOGENOUS MIXTURE

b)

HETEROGENOUS MIXTURE

23.

CONTITUENTS OF A MIXTURE CAN BE IN ANY RATIO: T/F

a)

TRUE

b)

FALSE

24.

PURE WATER BOILS AT

a)

89 DEG F

b)

100 DEG F

c)

100 DEG C

d)

150 DEG C

25.

SEPARATION OF MIXTURES INTO THEIR CONSTITUENTS IS OFTEN NECESSARY TO..

a)

TO REMOVE UNDESIRABLE CONSTIUENTS

b)

TO OBTAIN USEFUL CONSTITUENTS

c)

TO OBTAIN PURE SUBSTANCES

d)

ALL OF THE ABOVE

26.

PROPERTIES COMMONLY USED TO SEPARATE SOLIDS FROM A MIXTURE OF SOLIDS ARE

a)

COLOUR, SHAPE AND WEIGHT

b)

MAGNETIC PROPERTY

c)

SIZE AND SOLUBILITY IN WATER

d)

ALL OF THE ABOVE

27.

IF A SUBSTANCE CONTAIN TWO OR MORE KINDS OF MOLECULES, IT IS CALLED

a)

ELEMENT

b)

COMPOUND

c)

MIXTURE

d)

NONE OF THE ABOVE

28.

IF THE SUBSTANCE HAS FIXED MELTING AND BOILING POINTS, WE CAN SAY

a)

THE SUBSTANCE IS HETEROGENOUS MIXURE

b)

THE SUBSTANCE IS HOMOGENOUS MIXTURE

c)

THE SUBSTANCE IS PURE ELEMENT OR COMPOUND

d)

ALL OF THE ABOVE

29.

THE PARTICLES THAT SETTLE DOWN IN SEDIMENTATION ARE CALLED

a)

FILTRATE

b)

SEDIMENT

c)

SOLUTE

d)

ALL OF THE ABOVE

30.

GERMS IN WATER ARE KILLED BY ADDING

a)

OXYGEN

b)

HYDROGEN

c)

CHLORINE

d)

MAGNESIUM

31.

PROCESS OF CONVERSION OF WATER VAPOUR INTO LIQUID IS CALLED

a)

EVAPORATION

b)

DISTILLATION

c)

CONDENSATION

d)

ALL OF THE ABOVE

32.

CHOOSE THE FALSE STATEMENT

a)

WATER IS CALLED UNIVERSAL SOLVENT

b)

SATURATED SOLUTION CAN BE COOLED TO ADD MORE SOLUTE

c)

SOLUBILITY OF GASES IN WATER INCREASES WITH TEMPERATURE

d)

SUBSTANCES SUCH AS WOODTHAT DO NOT DISSOLVE IN WATER ARE CALLED INSOLUBLE IN WATER

33.

PROPERTY USED IN SEPARATING A MIXTURE OF TWO SOLIDS BY WINNOWING IS

a)

DIFFERENCE IN COLOR

b)

DIFFERENCE IN WEIGHT

c)

ONE IS MAGNETIC

d)

ALL OF THE ABOVE

34.

WHICH OF THE FOLLOWING CAN DISSOLVE IN WATER

a)

ONLY SOLIDS

b)

ONLY LIQUIDS

c)

ONLY SOLIDS AND LIQUIDS

d)

SOLIDS, LIQUIDS AND GASES

35.

SEDIMENTATION AND DECANTATION ARE USEFUL TO SEPARATE

a)

IMMISCIBLE LIQUIDS

b)

SOLUBLE SOLID FROM LIQUID

c)

INSOLUBLE SOLID FROM LIQUID

d)

INSOLUBLE SOLID FROM LIQUID WHERE THE SOLID IS HEAVIER THAN THE LIQUID

36.

During _________________ the solid particles that settle down forming a layer are called sediments

a)

Decantation

b)

Condensation

c)

Evaporation

d)

sieving

e)

Sedimentation

37.

the process of converting a liquid form to its vapour form is

a)

Decantation

b)

Condensation

c)

Sedimentation

d)

Evaporation

38.

Which process uses a paper to catch the solids?

a)

Sedementation

b)

Decantation

c)

Filtration

d)

Evaporation

39.

How do you separate water from milk?

a)

Evaporation

b)

Filtration

c)

Condensation

d)

Sedimantation

40.

How do you separate sand from water ?

a)

Decantation

b)

Sedimentation

c)

Filtration

d)

Evaporation

41.

How do you separate sugar from water?

a)

Evaporation

b)

Decantation

c)

Sedimentation

d)

Condensation

42.

How do you separate grains from chaff?

a)

Winnowing

b)

Threshing

c)

Sieving

d)

Handpicking

43.

how do you separate husks from chaff?

a)

threshing

b)

sieving

c)

handpicking

d)

winnowing

44.

which process do we use to get salt from sea water

a)

decantation

b)

evaporation

c)

condesation

d)

distillation

45.

By which process is oil and vinegar is commonly separated?

a)

Sedimentation

b)

Decantation

c)

Condensation

d)

Distillation

46.

How are grain seeds removed from their stalks?

a)

Sieving

b)

Winnowing

c)

Threshing

d)

All of the above

47.

What is a mixture?

a)

A chemical combination of two or more different substances.

b)

A physical combination of two or more different substances.

c)

A chemically pure substance.

d)

A special type of solution

48.

When the solute dissolves into a solvent and disappears it is called a _____________.

a)

MIxture

b)

Solution

c)

Solvent

d)

None of the above

49.

Pure substances are made up of the same kind of atoms.

a)

True

b)

False

50.

Which of the following is not a homogeneous mixture?

a)

Oxygen in water

b)

Tea

c)

Sugar and water

d)

Fried rice

51.

Lemonade is a special mixture called a

a)

substance

b)

solution

c)

plasma

d)

ingredient

52.

Hand picking method is effective in

a)

solid mixture

b)

Liquid mixture

c)

Gaseous mixture

d)

None of these

53.

Butter is separated by curd

a)

Filtration

b)

churning

c)

heating

d)

sieving

54.

The process of making mud particles heavy with alum

a)

Decantation

b)

Loading

c)

Filtration

d)

Condensation

55.

The method that is used to obtain pure salt from impure salt is

a)

Decantation

b)

Crystallisation

c)

Evaporation

d)

Condensation

56.

How are grain seeds removed from their stalks?

a)

Sieving

b)

Winnowing

c)

Threshing

d)

All of the above

57.

What is a mixture?

a)

A chemical combination of two or more different substances.

b)

A physical combination of two or more different substances.

c)

A chemically pure substance.

d)

A special type of solution

58.

When the solute dissolves into a solvent and disappears it is called a _____________.

a)

MIxture

b)

Solution

c)

Solvent

d)

None of the above

59.

Pure substances are made up of the same kind of atoms.

a)

True

b)

False

60.

Which of the following is not a homogeneous mixture?

a)

Oxygen in water

b)

Tea

c)

Sugar and water

d)

Fried rice

61.

Lemonade is a special mixture called a

a)

substance

b)

solution

c)

plasma

d)

ingredient

62.

A fruit salad is a

a)

solution

b)

mixture

63.

Which of the following is essential to perform winnowing activity?

a)

Wind

b)

Water

c)

Magnet

d)

Filter paper

64.

While preparing chapatis, Nitya found that the flour to be used was mixed with wheat grains. Which out of the following is the most suitable method to separate the grains from the flour?

a)

Threshing

b)

Sieving

c)

Winnowing

d)

Filtration

65.

Hand picking method is effective in

a)

solid mixture

b)

Liquid mixture

c)

Gaseous mixture

d)

None of these

66.

No substance in nature is 100 percent ___________

a)

Pure

b)

Mixture

c)

Impure

d)

None of these

67.

Anything that has mass and occupies space is called_______

a)

Material

b)

Matter

c)

Substance

d)

None of these

68.

Materials that allow light to pass through it is called____

a)

Opaque

b)

Translucent

c)

Transparent

d)

None of these

69.

A special kind of shine present on natural materials or shine appears when they freshly cut or rubbed with sand paper is called___________

a)

Non-lustre

b)

Lustre

c)

None of these

70.

Common salt is ________ in water.

a)

Insoluble

b)

Soluble

c)

Floats

d)

Sink

71.

A substance which is used in making objects is called __________

a)

Matter

b)

Material

c)

Substance

d)

All the above

72.

Tea leaves are separated from tea by the process of,

a)

Evaporation

b)

Filtration

c)

Sedimentation

d)

Decantation

73.

Diamond is a (a)   material.

74.

A mixture of salt and water can be separated by (a)  

75.

Which of the combinations is the odd one out?

a)

Ink and water

b)

Milk and water

c)

Oil and water

d)

Lime juice and water

76.

Mohan able to bend the rod because it is,

a)

Light

b)

Hard

c)

Water proof

d)

Flexible

77.

Abhi bought an object. It is made of a hard material. It is fragile(easy to break) and allows light to pass through it . What can the object be?

a)

Shoes

b)

Mirror

c)

Cricket bat

d)

Fish tank

78.

Which of the following is NOT a bad conductor of heat?

a)

Wooden ruler

b)

Plastic ruler

c)

Iron ruler

d)

All of these

79.

Which of the following is NOT attracted by a magnet?

a)

Iron

b)

Nickel

c)

Chalk

d)

Cobalt

80.

Door locks are made of metals. Which property of metals is made use of?

a)

They are lustre

b)

They are opaque

c)

They are good conductors of heat

d)

They are hard and strong.

81.

The process of settling down of particles of a solid in a liquid is

a)

Sublimation

b)

Sedimentation

c)

Filtration

d)

Decantation

82.

Which of the following is essential to perform winnowing activity?

a)

Wind

b)

Water

c)

Magnet

d)

Filter paper

83.

Hand picking method is effective in

a)

solid mixture

b)

Liquid mixture

c)

Gaseous mixture

d)

None of these

84.

The solubility ____________ with increase in temperature.

a)

doesn't change

b)

decreases

c)

increases

85.

The process of changing solid to gas directly is ______

a)

Evaporation

b)

Condensation

c)

Melting

d)

Sublimation

86.

Salt is obtained from sea water by __________

a)

Sublimation

b)

Filtration

c)

Evaporation

d)

Hand picking

87.

While preparing chapatis, Paheli found that the flour to be used was mixed with wheat grains. Which out of the following is the most suitable method to separate the grains from the flour?

a)

Threshing

b)

Sieving

c)

Winnowing

d)

Filtration

88.

Pure substances are made up of the same kind of atoms.

a)

True

b)

False

89.

Which of the following is not a homogeneous mixture?

a)

Oxygen in water

b)

Tea

c)

Sugar and water

d)

Fried rice

90.

Name the given process.

a)

Sublimation

b)

Threshing

c)

Distillation

d)

Magnetic separation

91.

Identify the method of separation

a)

Sedimentation

b)

Decantation

c)

Filtration

d)

Distillation

92.

Butter is separated from milk by

a)

Sedimentation

b)

Filtration

c)

Churning

d)

Decantation

93.

Threshing is done by

a)

Beating

b)

Machine

c)

Bullocks

d)

All of these

94.

Identify the process shown

a)

Evaporation

b)

Condensation

c)

Filtration

d)

Distillation

95.

The property which forms the basis of sieving

a)

Difference in the shape

b)

Difference in the weight

c)

Difference in the size

d)

Difference in colour

96.

A mixture of mustard oil and Kerosene oil can be separated by

a)

Sedimentation

b)

Separating funnel

c)

Filtration

d)

Distillation

97.

A separation method which involves blowing of light particles by air

a)

Winnowing

b)

Sedimentation     

c)

Filtration

d)

Threshing

98.

Identify the separating process

a)

Magnet

b)

Sedimentation

c)

Filtration

d)

Threshing

99.

The process of separating a pure substance in the form of crystals from its hot saturated solution by cooling is called

a)

Crystallization

b)

Filtration

c)

Sedimentation

d)

Decantation

100.

Air and salt water is an example of

a)

Compound

b)

Homogeneous mixture

c)

Element

d)

Heterogeneous mixture

101.

The process of settling down of particles of a solid in a liquid is

a)

Sublimation

b)

Sedimentation

c)

Filtration

d)

Decantation

102.

The solubility ____________ with increase in temperature.

a)

doesn't change

b)

decreases

c)

increases

103.

While preparing chapatis, Paheli found that the flour to be used was mixed with wheat grains. Which out of the following is the most suitable method to separate the grains from the flour?

a)

Threshing

b)

Sieving

c)

Winnowing

d)

Filtration

104.

What is the process that is used to separate grains from stalks called?

a)

handpicking

b)

threshing

c)

sieving

d)

winnowing

105.

When is the solution saturated?

a)

No more salt can be dissolved in the amount of water we have taken

b)

Lot more salt can be added

c)

You have to add some sugar into the solution

d)

None of the above

106.

When is the solution saturated?

a)

No more salt can be dissolved in the amount of water we have taken

b)

Lot more salt can be added

c)

You have to add some sugar into the solution

d)

None of the above

107.
The diagram shows the apparatus for separating soil and water. What are the labelled parts?
a)
A = distillate, B = filtrate
b)
A = filtrate, B = residue
c)
A = residue, B = filtrate
d)
A = residue, B = distillate
108.

Which separation technique uses the apparatus shown in the diagram?

a)

filtration

b)

evaporation

c)

distillation

d)

chromatography

109.
What is the boiling point of water?
a)
0oC
b)
100oC
c)
80oC
d)
95oC
110.
Filtration can be used to separate...
a)
an insoluble solid from a solution
b)
a soluble solid from a solution
c)
a dissolved solid from a solution
111.

What separation technique does the picture show?

a)

Sieving

b)

filtering

c)

magnetic separation

d)

Distillation

112.

What is the purpose of Filtration?

a)

Separating and insoluble solid from a liquid

b)

Separation of a mixture of 2 solids

c)

Separates heavier substances from a suspension

113.

Which of the following is essential to perform winnowing activity?

a)

Wind

b)

Water

c)

Magnet

d)

Filter paper

114.
Iron and copper screws could be separated using a magnet because
a)
iron is magnetic, copper is not
b)
copper is magnetic, iron is not
c)
neither metal is magnetic
d)
copper screws are heavier than iron and fall off the magnet
115.

This method ______________can

be used for separating slightly larger

sized impurities like the pieces of dirt,

stone, and husk from wheat, rice or

pulses.

a)

Handpicking

b)

Threshing

c)

Winnowing

d)

Sieving

e)

Filtration

116.

In ________ the stalks are beaten to free

the grain seeds.

a)

Winnowing

b)

Threshing

c)

Sieving

d)

Filtration

117.

In a________, impurities like a husk

and stones are removed from wheat

before grinding it.

a)

Flour Mill

b)

Separation Mill

c)

Substances Association

d)

Both flour and Separation mill

118.

When the heavier component in a

mixture settles after water is added to

it, the process is called _______________.

a)

Sedimentation

b)

Decantation

c)

Filtration

d)

Winnowing

119.

The process of conversion of water

into its vapour is called ____________.

a)

Decantation

b)

Sedimentation

c)

Filtration

d)

Evaporation

120.

Common salt is then

obtained from this mixture of salts by

further ________________.

a)

Decanataion

b)

Sedimentation

c)

Purification

d)

Condensation

121.

When the steam comes in contact

with the metal plate cooled with ice, it

__________and forms liquid water.

a)

Purification

b)

Sedimentation

c)

Filtration

d)

Condensation

122.

What is Mixture?

a)

A substance that is obtained by separating less than two kind of particles is called a Mixture.

b)

A substance that is obtained by mixing more than one kind of particles is called a Mixture.

c)

A substance that is obtained by mixing more than one kind of particles is called a Elements.

d)

I don't know

123.

What process is it ?

a)

Distillation

b)

Filtration

c)

Decantation

d)

Sedimentation

124.

_______________ had found distillation and crystallisation techniques. He is also known as _______________________.

a)

I don't know

b)

Jabir Ibn Hayyan

c)

Father of Modern Physics

d)

Jabirpotter Haryan

e)

Father of Modern Chemistry

125.

What is Supernatant?

a)

The clear liquid that remains above the sediments are called Supernatant.

b)

Sedimentation , Decantantion

c)

The clear liquid that remains above the sediments are called Dinosaur.

d)

The frozen liquid that remains below the decantation are called Supernatant.

126.

Define: Threshing ?

a)

Hand picking is the process of separating grain from the harvested Husk.

b)

I don't Know

c)

Winnowing is the process of which mix grain from the harvested stalks.

d)

Threshing is the process of separating grain from the harvested stalks.

127.

What type of Appearance is it?

a)

Non-Lustrus

b)

I don't know

c)

Lustrus

d)

Both A and B

128.

Choose the correct option for: Magnetic separation and Sieving

a)
b)
c)
d)
129.

Can we separate water and sand yes means which method?

a)

Loading

b)

Decantation

c)

Sedimentation

d)

Filtration

130.

Heterogeneous examples are____________ and ____________

a)

Seawater

b)

Granite

c)

Muddy water

d)

Air

131.
a)

I don't Know

b)

Threshing

c)

Winnowing

d)

Hand-picking

132.

Winnowing is the process of separating __________ from ___________ is known as Winnowing.

a)

Grains and Harvested stalks.

b)

Grains and Husk

c)

Grains and Sand

d)

Sand, Husk, Iron man and I don't know

133.

How to separate salt from sea water by _________________ method?

a)

Condenstation

b)

Sedimentation

c)

Distillation

d)

Evaporation

134.

What is a Solvent?

a)

A solvent is a substance which is present in smaller amount in the solution

b)

A solvent is a substance which is present in larger amount in the solution

c)

A dinosaur is a substance which is present in larger amount in the solution

d)

A solute is a substance which is present in larger amount in the solution

135.

Solvent + Solute = ______________.

a)

Solution

b)

Solubility

c)

Solvent

d)

Solute

136.

_____________ is a universal solvent

a)

KEY

b)

oil

c)

Air

d)

Water

137.

The method of separating seeds of paddy from its stalks is called (a)   .

138.

When milk, cooled after boiling, is poured onto a piece of cloth the cream (malai) is left behind on it. This process of separating cream from milk is an

example of (a)   .

139.

Salt is obtained from seawater by the process of (a)   .

140.

Impurities settled at the bottom when muddy water was kept overnight in a bucket. The clear water was then poured off from the top. The process of separation used in this example is called (a)   .

141.

A mixture of milk and water can be separated by filtration.

a)

TRUE

b)

FALSE

142.

A mixture of powdered salt and sugar can be separated by the process of winnowing.

a)

TRUE

b)

FALSE

143.

Separation of sugar from tea can be done with filtration.

a)

TRUE

b)

FALSE

144.

Grain and husk can be separated with the process of decantation.

a)

TRUE

b)

FALSE

145.

Substances in which solute dissolves is called __________.

a)

solute

b)

solvent

c)

saturation

d)

none of the above

146.

A mixture is a material made by mixing two or more substances which can be easily separated.

a)

true

b)

false

147.

When the heavier component of a mixture settle down in the container, it is called sedimentation.

a)

true

b)

false

148.

The process of conversion of water into vapor is called condensation.

a)

true

b)

false

149.

The method used to separate cream from milk is called centrifugation.

a)

true

b)

false

150.

The opposite process evaporation is condensation.

a)

true

b)

false

151.

Name this following method-

a)

threshing

b)

handpicking

c)

winnowing

d)

none of these

152.

Identify and name the image-

a)

Handpicking

b)

threshing

c)

sieving

d)

filtration

153.

Identify and name the image-

a)

threshing

b)

winnowing

c)

handpicking

d)

filtration

154.

Name the method by which we get salt from ocean water.

a)

condensation

b)

evaporation

c)

both a and b

d)

none of the above

155.

Identify and name the image:

a)

threshing

b)

sieving

c)

churning

d)

threshing

156.

Husk is separated from rice by __________.

a)

churning

b)

winnowing

c)

evaporation

d)

none of these

157.

The process of conversion of water into its liquid is called condensation.

a)

true

b)

false

158.

Oil mixed in water is the process of decantation.

a)

true

b)

false

159.

Iron powder mixed with flour is in the magnetic process.

a)

true

b)

false

160.

Identify and name the images-

a)

strainer

b)

straner

c)

stranner

d)

straymer

161.

A sieve is also known as chhalni.

a)

true

b)

false

162.

Identify and name the image.

a)

harvester

b)

harvest

c)

harwester

d)

none of the above

163.

Identify and name the image.

a)

greet

b)

greeter

c)

graeater

d)

grater

164.

Alum is added to the muddy water to make the mud heavy and settle down, this process is known as loading

a)

true

b)

false

165.

The process of changing solid to gas directly is ______

a)

Evaporation

b)

Condensation

c)

Melting

d)

Sublimation

166.
Statement A: A mixture of cement and pebbles can be separated by using the sieve with small pores Statement B: A sieve with small pores will allow only small cement particles to pass through and will hold back the pebbles
a)
a. Statement A is true only
b)
b. Statement B is true only
c)
c. Both are false
d)
d. Both are true
167.

You might have observed the preparation butter from cream at home. Which method(s) can be used to separate butter from the residue?

a)

evaporation

b)

centrifugation

c)

filtration

d)

sedimentation and decantation

168.

Sawdust is not soluble in water. If, accidentally some particles of sawdust drop into a glass of water. How would you separate them from water?

a)

Decanting

b)

Filtering

c)

Sieving

d)

Distillation

169.

A ______________ mixture is one that does not have a uniform composition.

a)

heterogeneous

b)

homogenous

c)

pure substance

170.

A material that allows liquids to pass through it, while very small solids remain behind as residue

a)

Filter

b)

Sieve

c)

Funnel

d)

Spoon

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