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प्रश्न
Write true or false
Deforestation is a man-made change.
पर्याय
True
False
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उत्तर
True
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संबंधित प्रश्न
When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place.
Photosynthesis cannot take place at night.
State whether the following is physical or chemical changes.
heating a mixture of iron filings and sulphur—
Tick (√) the correct alternative from the choice given for the following statement.
An example of both physical and chemical change is
Tick the most appropriate answer.
Photosynthesis requires
Photosynthesis cannot take place at night.
Classify the following as physical or chemical changes :
Breaking of a glass tumbler
Given reason:
Freezing of water to ice and evaporation of water are physical changes.
Ice kept in a beaker, slowly melts and turns into water. The water in the beaker on solidification is freezing turns back to ice. Give four reasons why the change from ice to water and water back to ice is considered a physical change.
______ is the Universal Solvent.
