HARD
9th CBSE
IMPORTANT
Earn 100

Draw a labelled diagram showing the process of fractional distillation.

Important Questions on Is Matter Around Us Pure?

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. 
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 51
Which separation technique will you apply for separating the following mixture: 
Butter from curd. 
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 51

Which separation technique will you apply for separating the following mixture: 

Different pigments from an extract of flower petals.