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प्रश्न
Change is the law of nature and occurs in our everyday life, at all times and in all places.
Differentiate between the following change with a suitable example.
Natural and man-made change.
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उत्तर
| Natural change | Man-made change |
| (i) Changes brought about by – nature. | (i) Changes brought about by – man. |
|
(ii) Examples:
|
(ii) Examples:
|
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Burning of paper and wood
Fill in the blank.
Heat is .................... by a gas during the process of condensation.
State three differences between evaporation and boiling
Classify the following as physical or chemical change :
Formation of curd from milk
Which of the following are physical changes and which are chemical changes?
Burning of candle wax, Melting of candle wax, Mixing of iron filings and sand, Burning of wood, Breaking a piece of chalk, Burning a piece of paper, Cutting a piece of paper.
Classify the following as a physical or a chemical change.
Burning of coal
Name the following.
The product obtained during a physical change when water converts from a liquid into a solid.
Ice, water and water vapour look different and display different ______ properties but they are ______ the same.
Cutting a log of wood into pieces is a chemical change.
Give an example to justify the statement that physical changes can be reversible as well as irreversible.
