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प्रश्न
State whether the following is physical or chemical changes.
photosynthesis —
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उत्तर
chemical change.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Melting of butter in a pan
Tick the most appropriate answer.
4. Chemical changes involve
- change in shape.
- change in size.
- change in molecular composition.
- none of these
Photosynthesis cannot take place at night.
Fill in the blank.
The process of a liquid changing into a solid is called ________
Match the examples of changes in List I with the correct.
| List I | List II |
| 1. Expansion of a steel rod on heating | A: Physical change |
| 2. Rotting of eggs | B: Chemical change |
| 3. Milk turning sour | |
| 4. Tarnishing of copper | |
| 5. Separation of naphthalene from a mixture of naphthalene and sodium chloride. |
Fill in the blank with the correct word of the statement given below:
Sublimation of iodine is an example of _________ change.
Select the chemical changes from the following list of changes
The carbon cycle.
Stretching gold coin into a ring is a ______ change.
Tearing of sheet of paper into pieces is ______ By the process of Heating of water, change.
A physical change is generally____________.
