WorksheetsChanges Around Us
Total questions: 10
Worksheet time: 5mins
Which of the following changes cannot be reversed?
Milk to paneer
Cold milk to hot milk
Wool to knitted sweater
Wet clothes to dry clothes
Metal rim is fixed to the wooden cart wheel by
heating metal rim
heating wooden wheel
cooling metal rim
cooling wooden wheel
Which is a way to make a change happen?
Heating a substance
Cooling a substance
Mixing a substance with another substance
All of these
Rusting of iron is an example of
slow change
fast change
reversible change
physical change
Which of the following is not a man-made change?
Change of day and night
Burning of fuels
Drying of clothes
Tearing of paper
Pick the change that can be reversed from the following
Melting of ghee
Burning of candle
Blooming of a flower
Cutting of trees
Salt is separated from sea water by
evaporation
condensation
filtration
decantation
Which one of these is not true?
Change in which heat is given out is called exothermic changes.
Changes that cannot be reversed is called irreversible changes
Iron contracts on heating and expand on cooling
None of these
Puneet added a spoon of salt in a glass of water and stirred it, the salt disappear. Which type of change is this?
Biological change
Physical change
No change
Chemical change
Which of the following may not be followed by a chemical reaction?
Change in smell
Change in colour
Change in temperature
change in physical state and size
