EASY
9th Manipur Board
IMPORTANT
Earn 100

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

Milk turns sour.

Important Questions on Pure Substances and Mixtures

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.

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?

Boiling of water.

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?

Sublimation of iodine.

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

Explain why the following is an example of chemical change?

Charring of sugar.

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

Explain why the following is an example of chemical change?

Burning of charcoal.

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

Explain why the following is an example of chemical change?

Digestion of food.

MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 2 - Pure Substances and Mixtures>Let us answer these:>Q 3
What is meant by saying metals are malleable and ductile?