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WorksheetsChanges around us
Total questions: 10
Worksheet time: 10mins
Which of the following is a reversible change?
tearing of paper
blowing air in a balloon
breaking of stick
baked chapati
Pick the change that can be reversed from the following.
Melting of ghee
Cutting of trees
Burning of candle
Blooming of flower
Rolling of chapati and baking of chapati are the changes that
can be reversed
cannot be reversed
can be reversed and cannot be reversed, respectively
cannot be reversed and can be reversed, respectively
Which of the following change cannot be reversed?
Melting of chocolate
Freezing of ice cream
Opening a door
Hardening of cement
Salt can be separated from its solution (salt dissolved in water), because
mixing of salt in water is a change that can be reversed by evaporation
mixing of salt in water is a change that can be reversed by heating and melting salt
mixing of salt in water is a change that cannot be reversed
mixing of salt in water is a permanent change
When iron is heated it
contracts
expands
dissolves
evaporates
The process where water changes into a vapour after heating is called
decantation
filtration
condensation
evaporation
When water is mixed with plaster of paris it becomes
soft
very soft
very hard
hard
Boiling an egg is a
chemical change
physical change
Freezing water to make ice cubes is a
physical change
chemical change
