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Separation of components of mixture

Total questions: 25

Worksheet time: 13mins

Name
Class
Date
1.

The solid that remains on the filter paper after filtration is known as _______.

a)

solution

b)

solute

c)

particles

d)

residue

2.

A technique in which two liquids are separated by a cyclic process of evaporation and condensation is known as ________.

a)

distillation

b)

chromatography

c)

filtration

d)

evaporation

3.

A coffee filter is used to separate the liquid coffee from the grounds. This is a suitable example for _______.

a)

sublimation

b)

distillation

c)

filtration

d)

evaporation

4.

Sublimation is a technique that helps chemists to _________ substances.

a)

break

b)

purify

c)

convert

d)

freeze

5.

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

a)

Handpicking

b)

Winnowing

c)

Sieving

d)

Both b & c

6.

A mixture of ammonium chloride and sand is separated by _________.

a)

evaporation

b)

decantation

c)

sublimation

d)

filtration

7.

The property which forms the basis of sieving is __________.

a)

difference in weight

b)

difference in color

c)

difference in shape

d)

difference in size

8.

X is a separation technique based on the difference in weights of the solid in a solid-solid mixture. What is X?

a)

Sieving

b)

Handpicking

c)

Threshing

d)

Winnowing

9.

Identify the type of mixture from this picture.

a)

solution

b)

homogeneous

c)

heterogeneous

d)

suspension

10.

Iodine can be separated from a mixture of iodine and sand by the process of _________.

a)

sublimation

b)

decantation

c)

filtration

d)

evaporation

11.

The picture shows a solution of copper sulphate. Which of the following statements is correct?

a)

Copper sulphate is insoluble in water and can be separated using filtration.

b)

Copper sulphate is soluble in water and can't be separated using evaporation.

c)

Copper sulphate is insoluble in water and can be separated using sedimentation.

d)

Copper sulphate is soluble in water and can be separated using evaporation.

12.

Substances like _____ can be removed from a mixture by the process of sublimation.

a)

wood

b)

ash

c)

camphor

d)

sodium chloride

13.

Insoluble impurities from muddy water can be removed by using _________.

a)

sedimentation

b)

evaporation

c)

handpicking

d)

sieving

14.

____________is a method to separate light husk from heavier grains like wheat

a)

Handpicking

b)

Sieving

c)

Winnowing

d)

Blowing

15.

At construction sites, sand is separated by __________from gravel.

a)

filtration

b)

sedimentation

c)

sieving

d)

decantation

16.

What is the method of separation shown?

a)

magnetic separation

b)

filtration

c)

centrifugation

d)

evaporation

17.

Which of these is not a pure substance?

a)

Oxygen

b)

Hydrogen

c)

Air

d)

Helium

18.

Which of these can be used as a filter?

a)
b)
c)
d)

All of the above

19.

We may separate pebbles from pulses and rice using ____.

a)

sieving

b)

handpicking

c)

winnowing

d)

filtration

20.

Naphthalene balls reduce in size due to _____.

a)

filtration

b)

sublimation

c)

evaporation

d)

condensation

21.

Identify the separation technique.

a)

Sieving

b)

Winnowing

c)

Handpicking

d)

Threshing

22.

How is the butter being obtained in this picture?

a)

Sedimentation

b)

Centrifugation

c)

Stirring

d)

Distillation

23.

Four mixtures are given below .Which of these can be separated by the method of winnowing?

a)

(i) and (ii)

b)

(ii) and (iii)

c)

(i) and (iii)

d)

(iii) and (iv)

24.

Identify the parts labelled A and B

a)

A- Filtrate; B – Residue

b)

A- Residue; B- Filtrate

c)

A- Filtered water; B- Mud

d)

A- Dirt; B- Water

25.

Which separation technique is shown in the picture given below?

a)

Evaporation

b)

Condensation

c)

Distillation

d)

Precipitation