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7th ICSE
IMPORTANT
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Which change is easily reversible?

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Important Questions on Physical and Chemical Changes

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7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 2 - Physical and Chemical Changes>EXERCISES>Q 12
Which metal is deposited on the iron surface in galvanisation process?
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7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 2 - Physical and Chemical Changes>EXERCISES>Q 1
Cutting a log of wood into pieces is a chemical change.
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7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 2 - Physical and Chemical Changes>EXERCISES>Q 2
The formation of manure from leaves is a physical change.
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7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 2 - Physical and Chemical Changes>EXERCISES>Q 3
Condensation of steam is not a chemical change.
HARD
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 2 - Physical and Chemical Changes>EXERCISES>Q 4
Iron and rust are the same substance.
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7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 2 - Physical and Chemical Changes>EXERCISES>Q 5
Most of the chemical changes are permanent.
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7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 2 - Physical and Chemical Changes>EXERCISES>Q 6
Burning of a magnesium ribbon is an endothermic reaction.
MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 2 - Physical and Chemical Changes>EXERCISES>Q 7
Digestion of food is a chemical change.