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Worksheets

Separation of Substances

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

Separating the wheat grain from the stalk of a wheat plant.

a)

winnowing

b)

Threshing

c)

Hand-picking

d)

sieving

2.

Separating pieces of stone and husk from rice and pulses

a)

winnowing

b)

Threshing

c)

Hand-picking

d)

sieving

3.

The method of separating heavier substances and lighter substances.

a)

winnowing

b)

Threshing

c)

Hand-picking

d)

sieving

4.

Seeds and solid particles of pulp from fruit juices are separated by the method of-

a)

sedimentation

b)

filtration

c)

decantation

d)

evaporation

5.

Separating tea leaves from prepared tea by the method of-

a)

sedimentation

b)

filtration

c)

decantation

d)

evaporation

6.

Which of the method is not used by the farmers

a)

winnowing

b)

threshing

c)

sieving

7.

Common salt is obtained from the sea water by the method of-

a)

sedimentation

b)

filtration

c)

decantation

d)

evaporation

8.

The process of settling heavier components is called -

a)

sedimentation

b)

filtration

c)

decantation

d)

evaporation

9.

The process of evaporation takes place continuously wherever water is present.

a)

True

b)

False

10.

Machines are also used to thresh large quantities of grain.

a)

True

b)

False

11.

Decantation is used to separate oil and water.

a)

True

b)

False

12.

Sieving is used when components of a mixture have same sizes.

a)

True

b)

False

13.

Sometimes, it may not be possible to separate components of a mixture by winnowing and handpicking.

a)

True

b)

False

14.

Wind manages to separate substances during threshing.

a)

True

b)

False

15.

Handpicking is used to separate dirt and husk from grains.

a)

True

b)

False