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प्रश्न
Which of the following is a physical change?
विकल्प
Rusting of iron
Combustion of magnesium ribbon
Burning of candle
Melting of wax
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उत्तर
Melting of wax
Explanation:
Melting of wax is a physical change. All other changes are chemical changes.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Passing of electric current through water, and water breaking down into hydrogen and oxygen gases.
Try segregating the things around you as pure substances or mixtures.
State whether the following is physical or chemical changes.
heating a mixture of iron filings and sulphur—
What are man-made changes ?
Give the main differences between physical changes and chemical changes.
Fill in the blank.
The reaction in which energy is evolved is called
Given reason:
Burning of paper is a chemical change.
Differentiate between a physical change and a chemical change with reference to – Formation of products.
Select the chemical changes from the following list of changes
Rotting of eggs.
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 |
