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15 questions
What is a reversible change?
a change that cannot be reversed
a change that can be reversed
I don't know
a change where a new substance is formed
What are irreversible changes?
A change that cannot be reversed
A change that can be reversed
I don't know
A change in which no new substance are formed
All changes takes place due to some______
Cause
Choice
During condensation and evaporation of water, the ________ of water changes.
Appearance
State
Movement
The_______ balloon changes when we blow the air.
Color
Shape
Rolling of chapathi and baking oh chapathi are the changes that,
Can be reversed
Cannot be reversed
Can be reversed and cannot be reversed
Cannot be reversed and can be reversed
Increase in the volume of substances on heating,the substance will show the change in,
Extension
Expansion
Exclusion
Changes that lead to the formation of new substances are called_________.
Physical change
Chemical change
Which of the following changes cannot be reversed?
Milk to paneer
Cold milk to hot milk
Yarn to knitted sweater
Wet clothes to dry clothes
Which of the following can be reversed?
Raw egg to boiled egg
Wet clothes to dry clothes
Bud of a flower
Cow dung to bio-gas
A change which is permanent in nature....
Irreversible
Reversible
A change temporary in nature is,
Reversible
Irreversible
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