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प्रश्न
Classify the following as physical or chemical change :
Condensation of steam
पर्याय
Physical change
Chemical change
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उत्तर
Condensation of steam – Physical change
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संबंधित प्रश्न
Tick the most appropriate answer
2. Melting of ice is a
- reversible change
- irreversible change
- chemical change
- none of these
State whether the following is physical or chemical changes.
burning of sugar —
Fill in the blank
Changes that occur in nature are called ______
Fill in the blank.
A change, which alters the composition of a substances, is known as a___________ change.
Change is the law of nature and occurs in our everyday life, at all times and in all places.
Differentiate between the following change with a suitable example.
Natural and man-made change.
Differentiate between a physical change and a chemical change with reference to – Formation of products.
Explain the term – ‘sublimation’. Is sublimation of naphthalene – a physical or a chemical change. Give reasons.
Fill in the blank with the correct word of the statement given below:
Sublimation involves a __________ change.
Select the chemical changes from the following list of changes
The crystallisation of salt from its solution.
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 |
