Advertisements
Advertisements
प्रश्न
Assertion: Burning of wood log to charcoal is a physical change.
Reason: The products formed of burning a piece of wood can be easily converted back to wood log.
विकल्प
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.
Advertisements
उत्तर
Both A and R are true but R is not the correct explanation of A.
APPEARS IN
संबंधित प्रश्न
Fill in the blank.
Heat is .................... by a gas during the process of condensation.
Photosynthesis cannot take place at night.
A physical change is temporary. Explain.
True or false
Dissolving of a solid in liquid is a physical change.
Name two reversible changes.
What is a physical change ? Give two examples of physical changes.
Fill in the blank.
The process of a liquid changing into a solid is called ________
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.
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 |
What kind of change is shown by tearing of paper?
