EASY
9th CBSE
IMPORTANT
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Air represents a solution in terms of science.

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Important Questions on Is Matter Around Us Pure

MEDIUM
9th CBSE
IMPORTANT
Super Simplified Science Chemistry CLASS IX>Chapter 2 - Is Matter Around Us Pure>TEST YOUR KNOWLEDGE>Q 35

60% solution of alcohol has a volume of 70 mL. What is the volume of pure alcohol in the solution?

MEDIUM
9th CBSE
IMPORTANT
Super Simplified Science Chemistry CLASS IX>Chapter 2 - Is Matter Around Us Pure>TEST YOUR KNOWLEDGE>Q 36

How will you purify an impure sample of copper sulphate containing some suspended impurities in it?

HARD
9th CBSE
IMPORTANT
Super Simplified Science Chemistry CLASS IX>Chapter 2 - Is Matter Around Us Pure>TEST YOUR KNOWLEDGE>Q 37

Give the main points of distinction in true solution, colloidal solution and suspension.

MEDIUM
9th CBSE
IMPORTANT
Super Simplified Science Chemistry CLASS IX>Chapter 2 - Is Matter Around Us Pure>TEST YOUR KNOWLEDGE>Q 38

What is Tyndall effect? How does it help in noticing the particles present in a colloidal solution?

EASY
9th CBSE
IMPORTANT
Super Simplified Science Chemistry CLASS IX>Chapter 2 - Is Matter Around Us Pure>TEST YOUR KNOWLEDGE>Q 39

You are given a mixture of methyl alcohol and acetone. Suggest a method for its separation.

EASY
9th CBSE
IMPORTANT
Super Simplified Science Chemistry CLASS IX>Chapter 2 - Is Matter Around Us Pure>TEST YOUR KNOWLEDGE>Q 40

What are physical and chemical changes? How will you distinguish between them?

MEDIUM
9th CBSE
IMPORTANT
Super Simplified Science Chemistry CLASS IX>Chapter 2 - Is Matter Around Us Pure>TEST YOUR KNOWLEDGE>Q 41
A mixture whether homogeneous or heterogeneous cannot be a pure substance. Explain.
EASY
9th CBSE
IMPORTANT
Super Simplified Science Chemistry CLASS IX>Chapter 2 - Is Matter Around Us Pure>TEST YOUR KNOWLEDGE>Q 42

Give one example of solid dissolved in liquid solution.