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प्रश्न
Make a list of different types of changes with example.
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उत्तर
Different types of changes are as under :
- Reversible Change e.g. Melting of ice.
- Irreversible Change e.g. Burning of paper.
- Periodic Change e.g. Swinging of pendulum.
- Non-Periodic Change e.g. Occurrence of floods.
- Desirable Change e.g. Ripening of fruits.
- Undesirable Change e.g. Rusting of Iron.
- Natural Change e.g. Changing of Seasons
- Man-Made Change e.g. Changing the direction of flow of a river by dams.
- Slow Change e.g. Growth of a plant
- Fast Change e.g. Occurrence of lightning during thunderstorm.
- Physical Change e.g. transformation of ice.
- Chemical Change e.g. curdling of milk.
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संबंधित प्रश्न
Write true or false
Earthquake is a desirable change.
Write true or false
Burning of sugar is a temporary change.
Tick (√) the correct alternative from the choice given for the following statement
A pop sound is heard when a lighted match stick is brought near the mouth of a jar. This indicates the release of gas.
True or false
Is melting of ice a reversible change?
Classify the following as physical or chemical change :
Condensation of steam
State whether the following statement is true or false. If false write the correct statement.
Melting of ice is an exothermic, irreversible chemical change.
You are given some candle wax. Can you make a candle doll from it? What kind of change is this?
Water is the universal solvent. Why?
Ice, water and water vapour look different and display different ______ properties but they are ______ the same.
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