MEDIUM
9th CBSE
IMPORTANT
Earn 100

Identify the colloid and true solution from the following: 
a. vinegar 
b. muddy water 
c. mist 
d. aluminium paint.
 

Important Questions on Is Matter Around Us Pure?

HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>Practice Questions>Q 15
How will you test a colloid?
HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>Practice Questions>Q 16
Mention the importance of colloids in nature.
HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>Practice Questions>Q 17
How will you differentiate between a suspension and a colloid? Give one example of each.
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>Practice Questions>Q 18
List the points of difference between homogeneous and heterogeneous substances.
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>Practice Questions>Q 19

Classify the following as homogeneous and heterogeneous mixture:

a. soda 
b. wood 
c. air 
d. vinegar 
e. filtered tea. 

HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>Practice Questions>Q 20
Which separation techniques will you apply for the separation of the following?
a. Mixture of iron filings and sulphur.
b. Camphor from the mixture of camphor and sodium chloride
c. Different components of ink.         
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>Practice Questions>Q 21
Name the technique to separate 
a. butter from curd 
b. salt from seawater 
c. camphor from salt.
 
HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>Practice Questions>Q 22
How will you separate a mixture of sulphur, common salt and sand?