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प्रश्न
Select the correct answer from the choice given below to complete the sentence
The dissolution of lead nitrate in water is deemed as a _________ change.
विकल्प
physical
chemical
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उत्तर
The dissolution of lead nitrate in water is deemed as a physical change.
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संबंधित प्रश्न
When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place.
Fill in the blank.
An earthquake is a .................. change.
Name two reversible changes.
State the Differences Between a Physical Change and a Chemical Change.
Given reason:
Freezing of water to ice and evaporation of water are physical changes.
Match the examples of changes in List I with the correct.
| List I | List II |
| 1. Expansion of a steel rod on heating | A: Physical change |
| 2. Rotting of eggs | B: Chemical change |
| 3. Milk turning sour | |
| 4. Tarnishing of copper | |
| 5. Separation of naphthalene from a mixture of naphthalene and sodium chloride. |
Select the chemical changes from the following list of changes
Glowing of an electric bulb.
State which of the following 1 to 5 pertain to – A: Physical Change B: Chemical change :
- Sublimation.
- Fermentation.
- Liquefaction or condensation.
- Magnetization.
- Respiration.
Give two examples for the following case:
Physical changes which are not reversible
Mention some of the different conditions needed for chemical changes to occur.
