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प्रश्न
Photosynthesis is a natural process by which green plants manufacture food in the presence of sunlight.
State the conclusions which can be drawn, to represent photosynthesis as a physical or a chemical change.
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उत्तर
Carbon dioxide and water cannot be obtained back from glucose and oxygen hence it is a chemical change.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Melting of butter in a pan
A burning candle shows both physical and chemical changes. Explain ?
State whether the following is physical or chemical changes.
mixing oil with water —
Tick the most appropriate answer.
Physical changes are
A physical change is temporary. Explain.
State the Differences Between a Physical Change and a Chemical Change.
What will you take into account while identifying the following?
A physical change in a substance.
Name the following:
The term involved in the change of state from – ‘water to ice’ – which is a physical change.
Name the following:
The type of change physical or chemical involved – ‘when a substance undergoes a change in state, colour or size’.
Two drops of dilute sulphuric acid were added to 1 g of copper sulphate powder and then small amount of hot water was added to dissolve it (step I). On cooling, beautiful blue coloured crystals got separated (step II). Step I and Step II are:
