EASY
9th CBSE
IMPORTANT
Earn 100

Alcohol and water can be separated by fractional distillation.

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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 34
An emulsion becomes stable in the presence of an emulsifier.
EASY
9th CBSE
IMPORTANT
Super Simplified Science Chemistry CLASS IX>Chapter 2 - Is Matter Around Us Pure>TEST YOUR KNOWLEDGE>Q 34
A chemical change can be easily reversed.
EASY
9th CBSE
IMPORTANT
Super Simplified Science Chemistry CLASS IX>Chapter 2 - Is Matter Around Us Pure>TEST YOUR KNOWLEDGE>Q 34
Air represents a solution in terms of science.
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.