HARD
7th CBSE
IMPORTANT
Earn 100

Describe tinning of iron sheets.

Important Questions on Physical and Chemical Changes

HARD
7th CBSE
IMPORTANT
Science 7>Chapter 6 - Physical and Chemical Changes>Summative ASSESSMENT>Q 5
Iron rusts, whereas stainless steel which contains large quantity of iron does not. Explain.
HARD
7th CBSE
IMPORTANT
Science 7>Chapter 6 - Physical and Chemical Changes>Summative ASSESSMENT>Q 1
Define a physical and a chemical change. Give one example of each.
EASY
7th CBSE
IMPORTANT
Science 7>Chapter 6 - Physical and Chemical Changes>Summative ASSESSMENT>Q 2

Classify the following into physical and chemical changes.

Melting of wax 

EASY
7th CBSE
IMPORTANT
Science 7>Chapter 6 - Physical and Chemical Changes>Summative ASSESSMENT>Q 2

Classify the following into physical and chemical change.

Burning of agarbatti 

EASY
7th CBSE
IMPORTANT
Science 7>Chapter 6 - Physical and Chemical Changes>Summative ASSESSMENT>Q 2

Classify the following into physical and chemical changes.

Tearing of cloth

EASY
7th CBSE
IMPORTANT
Science 7>Chapter 6 - Physical and Chemical Changes>Summative ASSESSMENT>Q 2

Classify the following into physical and chemical changes.

Cooking of food 

EASY
7th CBSE
IMPORTANT
Science 7>Chapter 6 - Physical and Chemical Changes>Summative ASSESSMENT>Q 2

Classify the following into physical and chemical changes.

Growth of a tree 

EASY
7th CBSE
IMPORTANT
Science 7>Chapter 6 - Physical and Chemical Changes>Summative ASSESSMENT>Q 2
Classify the following into physical and chemical change.
Burning of paper