Advertisements
Advertisements
प्रश्न
Tick the most appropriate answer.
Physical changes are
विकल्प
permanent
periodic
temporary
irreversible
Advertisements
उत्तर
temporary
APPEARS IN
संबंधित प्रश्न
Write true or false for the statement
Decomposition of leaves is a fast change.
Photosynthesis cannot take place at night.
Classify the following as a physical or a chemical change.
Burning of coal
Fill in the blanks with the appropriate words of the statement given below:
Heating a piece of iron is considered a __________ change while heating a piece of coal [carbon] is considered a ___________ change.
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
Drying of a fruit
Name the following.
The product of the chemical change in keeping a polished iron nail exposed to the atmosphere.
Sublimation of Iodine is a ______.
When solute is dissolved in a solvent it forms a solution.
Explain the characteristics of physical change with examples.
