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10 questions
Which of the following changes can be reversed?
Raw egg to boiled egg
Wet clothes to dry clothes
Bud to flower
Cow dung to biogas
On heating metal rim
Rusting of iron is an example of
what it shows ??
Melting of solid wax
liquid wax changes into vapors
Wax vapour bums into flame
All of these
Which is a way to make a change happen?
Heating a substance
Cooling a substance
Mixing a substance with another substance
All of these
Which of the following is not a man-made change?
Change of day and night
Burning of fuels
writing
reading
Which of the following is a chemical change?
. If the removal of the cause of change leads to regain the original situation, then the change is known as
Burning of wood in a chulha is a tan change.
Heat is a form of …………. .
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