List any three characteristics of colloid. 

Important Questions on Is Matter Around Us Pure?

MEDIUM

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 48

Name the two components of a colloid. 

MEDIUM

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 48

Identify colloid from the following mixtures: 
Muddy water, sugar in water, ink, blood, soda water, foam 

MEDIUM

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 49

Enumerate any two differences between simple distillation and fractional distillation. 

HARD

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 49

Draw a labelled diagram showing the process of fractional distillation.

HARD

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 50

Calculate the mass of potassium sulphate required to prepare its 10% solution in 100 g of water. 

MEDIUM

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 50

Differentiate between physical and chemical change. Give one example of each. Give one example where both physical and chemical change is taking place. 

HARD

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 51

What volume of ethyl alcohol and water must be mixed together to prepare $250$ ml of $60\%$ volume by volume solution of alcohol in water.

MEDIUM

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 51

Mention any two differences between compounds and mixtures.