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Separation of susbtances

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.

During _________________ the solid particles that settle down forming a layer are called sediments

a)

Decantation

b)

Condensation

c)

Evaporation

d)

sieving

e)

Sedimentation

2.

the process of converting a liquid form to its vapour form is

a)

Decantation

b)

Condensation

c)

Sedimentation

d)

Evaporation

3.

The materials to make Paneer can be found in

a)

Sedimentation

b)

Filtration

c)

Decantation

4.

Which process uses a paper to catch the solids?

a)

Sedementation

b)

Decantation

c)

Filtration

d)

Evaporation

5.

How do we separate grains from stalks?

a)

Sieving

b)

Threshing

c)

Winnowing

d)

Handpicking

6.

How do you separate sand from water ?

a)

Decantation

b)

Sedimentation

c)

Filtration

d)

Evaporation

7.

by which process is salt water turned into fresh water?

a)

Evaporation

b)

Condensation

c)

Distillation

d)

decantation

8.

By which process is oil and vinegar is commonly separated?

a)

Sedimentation

b)

Decantation

c)

Condensation

d)

Distillation

9.

When the solute dissolves into a solvent and disappears it is called a _____________.

a)

MIxture

b)

Solution

c)

Solvent

d)

None of the above

10.

Which of the following is not a homogeneous mixture?

a)

Oxygen in water

b)

Tea

c)

Sugar and water

d)

Fried rice

11.

The solubility ____________ with increase in temperature.

a)

doesn't change

b)

decreases

c)

increases

12.
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
13.
Which one of the following is the name for separation technique in the picture below
a)
distillation
b)
dissolving
c)
evaporation
d)
decanting
14.
The drops of water that appear on the outside of a glass of cold water on a warm day are an example of?
a)
sublimation
b)
condensation
c)
evaporation
15.

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