Advertisements
Advertisements
प्रश्न
Classify the Following as a Physical Or a Chemical change.
Glowing of an Electric Bulb
उत्तर
Physical change
APPEARS IN
संबंधित प्रश्न
Classify the following as chemical or physical change:
Rusting of almirah
Match the columns
| column A | coulmn B |
| 1. A change which cannot be easily reversed | a. man-made change |
| 2.A change that repeats itself at regular intervals | b. chemical change |
| 3. A change that is made by humans | c. physical change |
|
4. A change in which the original substance cannot be obtained |
d. periodic change |
| 5. A change where no new substance is formade | e. irreversible change |
| f. slow change |
Write short answer.
What are man-made changes ?
State whether the following is physical or chemical changes.
shaping a piece of glass —
Write true or false
Burning of sugar is a temporary change.
Solve this crossword by using the clues that follow-
Across
1. Energy in the form of sunlight is absorbed by the green plants in this process.
4. The reddish-brown substance formed over iron in the presence of oxygen and moisture.
5. This change is permanent and irreversible.
6. The process in which a solid directly changes into gaseous state.
Down
1 . It is the change that takes place in case of swinging pendulum of a clock. –
2. Occurrence of this is a non-periodic change as well as a natural change.
3. It is a physical change.
Classify the following as physical or chemical change :
Condensation of steam
What is a physical change ? Give two examples of physical changes.
Which of the following are physical changes and which are chemical changes ?
Rusting of iron
Give two examples for each of the following cases:
Physical changes are reversible.
