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Separation of Substances

Total questions: 20

Worksheet time: 9mins

Name
Class
Date
1.

A ________________ is made up of only one kind of particles.

a)

Mixture

b)

Compound

c)

Pure substance

d)

Impure substance

2.

Solvent + Solute = ______________.

a)

Solution

b)

Solubility

c)

Solvent

d)

Solute

3.

What is formed when we dissolve a substance in water?

a)

Solute

b)

Mixture

c)

Solvent

d)

Solution

4.

The process of making mud particles heavy with alum

a)

Decantation

b)

Loading

c)

Filtration

d)

Condensation

5.

Salt and Sugar can be separated out by

a)

Threshing

b)

Filtration

c)

Handpicking

d)

Sieving

6.

Hand picking method is effective in

a)

solid mixture

b)

Liquid mixture

c)

Gaseous mixture

d)

None of these

7.

____________________ is the method is used for separating small particles of dirt stone husk etc from the grains of wheat , rice pulses etc.

a)

Winnowing

b)

Decantation

c)

Churning

d)

Hand picking

8.

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

9.

How are grain seeds removed from their stalks?

a)

Sieving

b)

Winnowing

c)

Threshing

d)

All of the above

10.

Tea leaves are separated from tea by the process of,

a)

Evaporation

b)

Filtration

c)

Sedimentation

d)

Decantation

11.

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

a)

Sublimation

b)

Sedimentation

c)

Filtration

d)

Decantation

12.

What is the purpose of Filtration?

a)

Separating an insoluble solid from a liquid

b)

Separation of a mixture of 2 solids

c)

Separates heavier substances from a suspension

13.

Which of the following is essential to perform winnowing activity?

a)

Wind

b)

Water

c)

Magnet

d)

Filter paper

14.

In ________ the stalks are beaten to free

the grain seeds.

a)

Winnowing

b)

Threshing

c)

Sieving

d)

Filtration

15.

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

16.

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

17.

Identify the method of separation

a)

Sedimentation

b)

Decantation

c)

Filtration

d)

Distillation

18.
a)

I don't Know

b)

Threshing

c)

Winnowing

d)

Hand-picking

19.

Can we separate water and sand yes means which method?

a)

Loading

b)

Decantation

c)

Sedimentation

d)

Filtration

20.

Identify and name the image-

a)

threshing

b)

winnowing

c)

handpicking

d)

filtration