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Separation of substances-5th-Class

Total questions: 43

Worksheet time: 28mins

Name
Class
Date
1.

Name the process shown here.

a)

Sedimentation

b)

Decantation

c)

Dissolution

d)

Sieving

2.

The process used to separate grains from stalks

a)

Threshing

b)

Winnowing

c)

Hand-picking

d)

Sieving

3.

The method of separation in which heavier and lighter components of a mixture are separated with the help of wind is called

a)

Threshing

b)

Winnowing

c)

Sedimentation

d)

Sieving

4.

To separate a mixture of stones and wheat flour, the method used is

a)

Sieving

b)

Winnowing

c)

Evaporation

d)

Filtration

5.

The process by which gas changes into liquid is

a)

Cooling

b)

Condensation

c)

Freezing

d)

Steaming

6.

The process by which we can separate salt and water from their mixture is

a)

Filtration

b)

Evaporation

c)

Sedimentation

d)

Decantation

7.

Sand, salt and water mixture is provided to you. The sequence of processes used to separate them would be

a)

Decantation/filtration, Evaporation, Condensation

b)

Evaporation, Condensation, Decantation/filtration

c)

Decantation/filtration, Condensation, Evaporation

d)

Evaporation,Decantation /Filtration, Condensation

8.

A solution in which no more solute can be added is called

a)

Saturated solution

b)

Unsaturated solution

c)

True Solution

d)

Mixture

9.

The solubility of a solution can be increased by

a)

Adding more water to it

b)

By freezing the solution

c)

By heating the solution

d)

By adding alum to it

10.

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

a)

Sublimation

b)

Sedimentation

c)

Filtration

d)

Decantation

11.

While preparing chapatis, Priti 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

12.

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

a)

handpicking

b)

threshing

c)

sieving

d)

winnowing

13.

What separation technique does the picture show?

a)

Sieving

b)

filtering

c)

magnetic separation

d)

Distillation

14.
The drops of water that appear on the outside of a glass of cold water on a warm day are an example of?
a)
sublimation
b)
condensation
c)
evaporation
15.
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
16.

Which of the following is essential to perform winnowing activity?

a)

Wind

b)

Water

c)

Magnet

d)

Filter paper

17.

The process of changing solid to gas directly is ______

a)

Evaporation

b)

Condensation

c)

Melting

d)

Sublimation

18.

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

19.

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

a)

heterogeneous

b)

homogenous

c)

pure substance

20.

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

21.
Which of the following is a method of separating solutions?
a)
hand seperation
b)
filtering
c)
screening
d)
evaporation 
22.
Soil is an example of a
a)
homogeneous mixture
b)
heterogeneous mixture
23.

Butter is separated by curd

a)

Filtration

b)

churning

c)

heating

d)

sieving

24.

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

a)

Decantation

b)

Crystallisation

c)

Evaporation

d)

Condensation

25.

A solution which cannot dissolve more solute at a given temperature

a)

Solution

b)

Filtrate

c)

Saturated solution

d)

Unsaturated solution

26.

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

a)

Sublimation

b)

Sedimentation

c)

Filtration

d)

Decantation

27.

what is the method of separating components from a mixture by blowing?

a)

handpicking

b)

threshing

c)

winnowing

d)

washing

28.

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

a)

mixture

b)

solution

c)

element

29.

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

a)

True

b)

False

30.
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
31.

Name the given process.

a)

Sublimation

b)

Threshing

c)

Distillation

d)

Magnetic separation

32.

Tea leaves are separated from tea by the process of,

a)

Evaporation

b)

Filtration

c)

Sedimentation

d)

Decantation

33.

While Handpicking the quantity of such

impurities is ___________

a)

not very large

b)

very large

c)

both large and small

d)

equal-sized

34.

Stalks are________ before the grain is separated

from them.

a)

soaked

b)

dried

c)

coated

d)

beaten

35.

In ________ the stalks are beaten to free

the grain seeds.

a)

Winnowing

b)

Threshing

c)

Sieving

d)

Filtration

36.

___________ is used to

separate heavier and lighter components

of a mixture by wind or by blowing air.

a)

Threshing

b)

Winnowing

c)

Sieving

d)

Sedimentation

37.

________ allows the fine flour particles

to pass through the holes of the sieve

while the bigger impurities remain on

the sieve.

a)

Siever

b)

Sieving

c)

Sievester

d)

Decantionion

38.

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

39.

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

40.

Choose a method of separation for the mixture bought by Aryan

a)

Sieving

b)

Handpicking

c)

Threshing

d)

Filtration

41.

Ramaira wants to make low fat Lassi, which method shall she use for separating the fat?

a)

Filtration

b)

Sedimentation

c)

Decantation

d)

Churning

42.

Identify the separation technique

a)

Threshing

b)

Winnowing

c)

Sieving

d)

Handpicking

43.

Which method of separation can you observe in the picture?

a)

Decantation

b)

Evaporation

c)

Sedimentation

d)

Sieving