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प्रश्न
Select the chemical changes from the following list of changes
Boiling of milk.
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उत्तर
Boiling milk is PHYSICAL change as no change in composition, temporary and reversible, no new substance with new properties is formed.
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संबंधित प्रश्न
Write short answer.
Name two reversible changes.
Fill in the blank.
The reaction in which energy is evolved is called
Given reason:
Burning of paper is a chemical change.
What will you take into account while identifying the following?
A physical change in a substance.
Select the chemical changes from the following list of changes
Respiration in mammals.
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 |
Name the following.
The salt obtained when a chemical change takes place on the addition of iron to dilute sulphuric acid.
Gas exists in three states as solid, liquid, and gas.
Mention a few physical properties of a substance.
Give an example to justify the statement that physical changes can be reversible as well as irreversible.
