MEDIUM
9th CBSE
IMPORTANT
Earn 100

Explain why coal is regarded as a mixture and not a pure substance.

Important Questions on Is Matter Around Us Pure?

MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>EXERCISES>Q 3
What are the characteristics of non-metals?
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>EXERCISES>Q 4

Give four characteristics of a compound.

MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>EXERCISES>Q 5
Define saturated solution, unsaturated solution and supersaturated solution.
HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>EXERCISES>Q 6
What are the applications of colloids?
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>EXERCISES>Q 7
For an effective separation of two components of a miscible liquid by fractional distillation, what is the minimum difference in boiling point of two components?
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>EXERCISES>Q 8
Give two applications of the separating funnel method of separating a mixture.
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>EXERCISES>Q 9
Give two applications of the centrifugation method of separating a mixture.
HARD
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>EXERCISES>Q 10
How will you separate the coloured components of black ink by paper chromatography?