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प्रश्न
Write true or false
Burning of sugar is a temporary change.
विकल्प
True
False
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उत्तर
False
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संबंधित प्रश्न
Fill in the blank.
An earthquake is a .................. change.
Write true or false for the statement.
Burning of paper and formation of curd are reversible changes
State whether the following is physical or chemical changes.
shaping a piece of glass —
State whether the following is physical or chemical changes.
(energy produced) dissolving sugar in water —
Write true or false
Cutting of paper into pieces is a chemical change.
Which of the following are chemical changes ?
- decaying of wood
- burning of wood
- sawing of wood
- hammering of nail into wood
Fill in the blank.
The process of a liquid changing into a solid is called ________
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.
Desirable and undesirable change.
Give a reason why – Addition of zinc nitrate to water is a physical change but, the addition of zinc to dilute nitric acid is a chemical change.
Explain the characteristics of physical change with examples.
