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प्रश्न
Fill in the blank.
When a candle burns, wax melts. Melting of wax is a ________ change.
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उत्तर
When a candle burns, wax melts. Melting of wax is a physical change.
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संबंधित प्रश्न
What are reversible and irreversible changes ? Give one example for each.
Fill in the blank
Heat is ________ by a gas during the process of condensation.
Given reason:
Freezing of water to ice and evaporation of water are physical changes.
Distinguish between the following.
Physical change and chemical change
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.
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Select the correct answer from the choice given below to complete the sentence
The matter is added or removed during a ____________ change.
Wood to sawdust:______:: Wood to Ash: Chemical change
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| rusted, colourful, substance, chemical, physical, reversible, iron oxide, object |
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