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6th Ch-3 Separation of Substances

Total questions: 22

Worksheet time: 12mins

Name
Class
Date
1.

Choose a method of separation for the mixture bought by Aryan

a)

Sieving

b)

Handpicking

c)

Threshing

d)

Filtration

2.

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

a)

Filtration

b)

Sedimentation

c)

Decantation

d)

Churning

3.

We can separate salt from water using filtration?

a)

True

b)

False

4.

Choose the mixtures which cannot be separated by filtration

a)

Cornflakes in milk

b)

Sugar in Milk

c)

Chocolate syrup in milk

d)

Tea leaves from water

5.

Which method is used to separate pebbles and stones from sand?

a)

Threshing

b)

Winnowing

c)

Sieving

d)

Filtration

6.

Property which forms the basis of sieving

a)

Difference in colour

b)

Difference in weight

c)

Difference in shape

d)

Difference in Size

7.

Identify the separation technique

a)

Threshing

b)

Winnowing

c)

Sieving

d)

Handpicking

8.

Which method of separation can you observe in the picture?

a)

Decantation

b)

Evaporation

c)

Sedimentation

d)

Sieving

9.

In absence of a strainer, which technique can be used to separate tea from tea leaves?

a)

Threshing

b)

Winnowing

c)

Sedimentation-Decantation

d)

Handpicking

10.

you want to dissolve sugar in water, for preparing lemonade. will you add ice before or after adding sugar?

a)

Sugar will be added before ice

b)

Ice will be added before sugar

c)

Sugar will not be dissolved in water

d)

Ice will change the flavour

11.

Sugar can be separated from water using which of the following techniques?

a)

Sedimentation

b)

Handpicking

c)

Evaporation

d)

Churning

12.

Mixture of of salt, sand, oil and water is given ,which of these sequence can be used to separate salt

a)

Decantation -> Filtration -> Evaporation

b)

Filtration -> Evaporation -> Condensation

c)

Filtration -> boiling ->Decantation

d)

Decantation -> Evaporation -> Handpicking

13.

Oil and water can be separated from each other using which of the following techniques?

a)

Sieving

b)

Filtration

c)

Sedimentation-decantation

d)

Winnowing

14.

Iron particles can be separated from the mixture by:

a)

Magnet

b)

Sedimentation

c)

Evaporation

d)

Decantation

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.

What separation technique does the picture show?

a)

Sieving

b)

filtering

c)

magnetic separation

d)

Distillation

17.
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
18.

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

19.
What is the boiling point of water?
a)
0oC
b)
100oC
c)
80oC
d)
95oC
20.

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

21.

In ________ the stalks are beaten to free

the grain seeds.

a)

Winnowing

b)

Threshing

c)

Sieving

d)

Filtration

22.

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