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प्रश्न
Classify the following as a physical or a chemical change.
Butter getting rancid
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उत्तर
Chemical change
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Dissolving common salt in water.
Fill in the blank.
Heat is .................... by a gas during the process of condensation.
Write short answer.
Give an example of desirable change which can also be undesirable
State three differences between evaporation and boiling
Name a chemical change which takes place in presence of:
True or false
Dissolving of a solid in liquid is a physical change.
Select the chemical changes from the following list of changes
The occurrence of lightning.
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 |
Analogy:
Melting of ice: Physical change.
Popping of popcorn: ______.
Fill in the blanks in the following statements using the words given in the box.
| rusted, colourful, substance, chemical, physical, reversible, iron oxide, object |
- Making sugar solution is a ______ change.
- A physical change is generally ______.
- Grinding of wheat grain changes its size. It is a ______ change.
- Iron benches kept in lawns and gardens get ______. It is a ______ change because a new ______ is formed.
