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प्रश्न
What type of change is colouring of a paper?
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उत्तर
Physical change.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Boiling of water to form steam.
Changes in which only ______ properties of a substance change are called physical changes.
Tick the most appropriate answer.
5. Photosynthesis requires
- heat energy.
- wind energy
- sunlight.
- sound energy
What role does energy play in initiating a chemical change ?
Fill in the blank
Revolution of the earth around the sun is a ________ change.
State whether the following is physical or chemical changes.
mixing oil with water —
Select the chemical changes from the following list of changes
Drying of a fruit
Select the chemical changes from the following list of changes
The carbon cycle.
Match the examples of changes in List I with the correct type of change in List II.
| List I | List II |
| 1. Burning of paper | A: Physical change |
| 2. The ringing of an electric bell | B: Chemical change |
| 3. Curdling of milk | |
| 4. Electric light is switched on | |
| 5. Melting of butter |
Name the following.
The salt obtained when a chemical change takes place on the addition of iron to dilute sulphuric acid.
