EASY
7th CBSE
IMPORTANT
Earn 100

Burning of coal is a change. 

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Important Questions on Physical and Chemical Changes

EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>EXERCISES>Q II
Rusting of iron is a _____ change. 
EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>EXERCISES>Q II
Dissolving copper sulphate in water is a _____ change. 
EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>EXERCISES>Q II
Heating powdered sulphur with iron filing to red hot state is a _____ change.
EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>EXERCISES>Q II
Lime water turning milky when carbon dioxide gas is passed through it is a _____ change. 
EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>EXERCISES>Q II
A physical change is _____. 
EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>EXERCISES>Q II
Most chemical changes are _____. (reversible / irreversible)
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>EXERCISES>Q III
Give an example of a combination reaction.
HARD
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>EXERCISES>Q III
Give an example of a decomposition reaction.