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Separation of Substances

Total questions: 17

Worksheet time: 11mins

Name
Class
Date
1.

The method of separating seeds from its stack is called---

a)

Threshing

b)

Winnowing

c)

Filtration

d)

Distilation

2.

The direction of wind plays an important role in the process of---

a)

Threshing

b)

Distillation

c)

Winnowing

d)

Condensation

3.

1.    Grapes can be separated from the mixture of nuts and grapes by---

a)

Distillation

b)

Threshing

c)

Hand Picking

d)

Winnowing

4.

It is obtained by mixing two or more solids

a)

Solid-Liquid mixture

b)

Solid-Gas mixture

c)

Solid-Solid mixture

d)

Liquid-gas mixture

5.

It is the process in which evaporation is followed by condensation

a)

Winnowing

b)

Distillation

c)

Threshing

d)

Boilling

6.

The liquid obtained after distillation

a)

Water

b)

Residue

c)

Distillate

d)

Kerosene

7.

A mixture of two immiscible liquids, such as oil and water, can be separated by using

a)

Fractional distillation

b)

Filtration

c)

Separating Funnel

d)

Distillation

8.

If we want to separate more than two liquids in a mixture of miscible liquids we use

a)

Distillation

b)

Sedimentation

c)

Filtration

d)

Fractional distillation

9.

Grapes can be separated from the mixture of nuts and grapes by

a)

Hand Picking

b)

Sieving

c)

Threshing

d)

Sedimentation

10.

Seed coverings and tiny pieces of leaves or stems present in threshed grains are called

a)

Husks

b)

Chaffs

c)

Branches

d)

Coverings

11.

Salt is obtained from seawater by the process of

a)

Condensation

b)

Filtration

c)

Sedimentation

d)

Evaporation

12.

Distillation is a separation technique in which ----- is followed by ------

a)

Condensation-

Evaporation

b)

Evaporation-

Condensation

c)

Filtration-

Sedimentation

d)

Sedimentation-

Filtration

13.

Which of the following mixtures would you be able to separate using the method of magnetic separation?

a)

Salt and moth balls

b)

Sulphur and iron filings

c)

Gold and sulphur

d)

Brass and gold

14.

Identify whether the statement or statements is/are true or false? 

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)

Only Statement A is true

b)

Only Statement B is true

c)

Both are true

d)

Both are false

15.

The liquid which passes through the filter paper is called                and the insoluble impurities which remain on the filter paper are called                 

a)

Residue, Filtrate

b)

Distillate, Residue

c)

Filtrate, Residue

d)

Filtrate, Distillate

16.

Which of the following mixtures use filtration as method of separating components? 

 

     i) Salt in water                                                     iii) Chalk powder in water    ii) Tea with tea leaves                                         iv) Fruit juice with pulp 

a)

(i), (ii) & (iii)

b)

(ii) & (iii)

c)

(ii), (iii) & (iv)

d)

all of the above

17.

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

a)

Sublimation

b)

Sedimentation

c)

Decantation

d)

Filtration