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प्रश्न
Classify the Following as a Physical Or a Chemical Change.
Curdling of Milk
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उत्तर
Chemical change
APPEARS IN
संबंधित प्रश्न
Classify the following as chemical or physical change:
Cutting of trees
Classify the following as chemical or physical change:
Rusting of almirah
Classify the following as chemical or physical change:
Passing of electric current through water, and water breaking down into hydrogen and oxygen gases.
Tick the most appropriate answer.
4. Chemical changes involve
- change in shape.
- change in size.
- change in molecular composition.
- none of these
Fill in the blank
change in which the substance can be brought back to its original state is called a ............... change.
Write true or false
Decomposition of leaves is a fast change.
Which of the following are physical changes and which are chemical changes ?
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. |
Compare the energy changes involved during a physical and a chemical change.
Select the chemical changes from the following list of changes
The crystallisation of salt from its solution.
