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Worksheets

6th cdf 11/12

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Many substances around us contain only one type of constituent particles, molecules and compounds are called

a)

pure substances

b)

Impure substances

c)

Heterogeneous substances

d)

solutions

2.

The unwanted particles present in a substance is called as

a)

Pure substances

b)

Impurities

c)

Both 1&2

d)

Solution

3.

The substances which contain more than one component mixed in any ratio are called

a)

mixtures

b)

Pure substance

c)

Both 1 & 2

d)

None of the above

4.

Air is a examples for

a)

Pure substance

b)

compound

c)

mixture

d)

all the above

5.

The mixtures in which particles of the substances present can not be seen are called

a)

hetrogeneous mixtures

b)

homogeneous mixtures

c)

Insoluble

d)

All the above

6.

mixture in which particles of the substance present can be seen easily are called

a)

Heterogeneous mixtures

b)

Homogeneous mixtures

c)

soluble solution

d)

all the above

7.

water in oil , dust in air are the examples for

a)

Homogeneous solution

b)

Hetrogeneous solution

c)

pure solution

d)

all the above

8.

air , cool drinks , sugar water are examples for

a)

homogeneous mixture

b)

hetrogeneous mixture

c)

Insoluble solutions

d)

All the above

9.

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

a)

Hand picking

b)

decantation

c)

magnetic separation

d)

filtration

10.

Separation of salt from sea water by using which methode

a)

magnetic separation

b)

decantation

c)

filtration

d)

evaporation