EASY
7th CBSE
IMPORTANT
Earn 100

The rotting of fruits and vegetables is an example of a chemical change. 

83.33% studentsanswered this correctly

Important Questions on Physical and Chemical Changes

EASY
7th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 6 - Physical and Chemical Changes>TRY OUT

How can you say that melting of ice is a physical change? 

MEDIUM
7th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 6 - Physical and Chemical Changes>Exercise>Q 5
Rusting of iron takes place in the presence of moist air.
EASY
7th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 6 - Physical and Chemical Changes>Exercise>Q 1

Define chemical change.

MEDIUM
7th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 6 - Physical and Chemical Changes>Exercise>Q 3

What are the conditions for rusting?

EASY
7th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 6 - Physical and Chemical Changes>Exercise>Q 4
What is galvanisation?
MEDIUM
7th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 6 - Physical and Chemical Changes>Exercise>Q 5
How will you obtain pure crystals of copper sulphate?
MEDIUM
7th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 6 - Physical and Chemical Changes>Exercise>Q 1
Distinguish between physical and chemical change.
HARD
7th CBSE
IMPORTANT
Focus Science in Everyday Life>Chapter 6 - Physical and Chemical Changes>Exercise>Q 2
Write the various characteristics of chemical reactions.