MEDIUM
9th CBSE
IMPORTANT
Earn 100

How can we separate particles of colloidal solution? Name the process. 

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 21
When blue ink is heated, what do you think has got evaporated from the watch glass? 
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 22
What will be the residue left on the watch glass on heating blue ink in it? 
EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 23
Is ink a pure substance or mixture? Give reason. 
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 24
Does blue ink consist of single colour or more than one colour?
EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 25
How is pure sugar obtained from sugar solution? 
EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 26
What do you observe in the china dish during crystallization? 
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 27
Does the crystals look pure after crystallisation?
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 2 - Is Matter Around Us Pure?>ASSESS YOURSELF>Q 28
How will you separate the crystals from the liquid in china dish after crystallisation?