Advertisements
Advertisements
प्रश्न
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.
Advertisements
उत्तर
| Natural change | Man-made change |
| (i) Changes brought about by – nature. | (i) Changes brought about by – man. |
|
(ii) Examples:
|
(ii) Examples:
|
APPEARS IN
संबंधित प्रश्न
Try segregating the things around you as pure substances or mixtures.
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 true or false for the statement.
Dissolving of solute in a solvent and rusting of iron are both physical changes.
What are reversible and irreversible changes ? Give one example for each.
Write true or false
Deforestation is a man-made change.
Photosynthesis is a natural process by which green plants manufacture food in the presence of sunlight.
State the conclusions which can be drawn, to represent photosynthesis as a physical or a chemical change.
Give a reason why
Change of seasons is a periodic change while the change of weather is a non-periodic change.
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.
When ice melts to form water, change occurs in its
Stretching gold coin into a ring is a ______ change.
