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प्रश्न
When ice melts to form water, change occurs in its
विकल्प
position
colour
physical state
composition
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उत्तर
Physical state
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Rusting of almirah
True or false
Is the process of digestion a physical change?
Classify the following as physical or chemical changes :
Breaking of a glass tumbler
Fill in the blank.
The reaction in which energy is evolved is called
Given reason:
Freezing of water to ice and evaporation of water are physical changes.
Give the reason why the following is considered as chemical changes.
Copper carbonate on heat gives copper oxide and carbon dioxide.
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 |
When a woolen yarn is knitted to get a sweater, the change can be classified as ____________.
Distinguish physical and chemical changes.
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.
