MEDIUM
9th Manipur Board
IMPORTANT
Earn 100

What type of mixtures are separated by the process of fractional distillation?

Important Questions on Pure Substances and Mixtures

EASY
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 2 - Pure Substances and Mixtures>Let us answer these:>Q 1
Name the process by which we get a new substance?
EASY
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 2 - Pure Substances and Mixtures>Let us answer these:>Q 2
What is the essential condition for a substance to undergo a chemical composition?
EASY
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 2 - Pure Substances and Mixtures>Let us answer these:>Q 3

Classify the following change as physical or chemical.

Decay of vegetables.

 

MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 2 - Pure Substances and Mixtures>Let us answer these:>Q 3

Classify the following change as physical or chemical.

Formation of clouds.

MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 2 - Pure Substances and Mixtures>Let us answer these:>Q 3

Classify the following change as physical or chemical.

Burning of candle.

EASY
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 2 - Pure Substances and Mixtures>Let us answer these:>Q 4

How can you say, whether or not a chemical change takes place when:

Milk turns sour.

MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 2 - Pure Substances and Mixtures>Let us answer these:>Q 4

How can you say whether or not a chemical change takes place when:

Iron changes into rust.

EASY
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 2 - Pure Substances and Mixtures>Let us answer these:>Q 1

Explain why the following is an example of physical change?

Mixing of iron and sulphur.