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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.
Slow and fast change.
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उत्तर
| Slow change | Fast change |
| (i) Changes which occur – very slowly over days, months, or years. | (i) Changes which occur – very rapidly in seconds or minutes. |
| (ii) Examples: Growth of a tree from a seed - a few years, tooth decay, change of seasons, growth of many rusting of iron | (ii) Examples: Occurrence of lightning - a few seconds, burning of paper or match, lighting a bulb, bursting of fireworks. |
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संबंधित प्रश्न
Name a chemical change which takes place in presence of:
Fill in the blank.
Growing of a seedling into a plant is _______ change.
Write true or false
A natural change can also be a desirable change.
Write true or false
Deforestation is a man-made change.
Write true or false
Decomposition of leaves is a fast change.
What are man-made changes ?
Given reason:
Cutting of a cloth piece is a physical change, though it cannot be reversed.
Fill in the blank with the correct word of the statement given below:
Sublimation of iodine is an example of _________ change.
Select the correct answer from the choice given below to complete the sentence
A change in which a substance retains its identity is a
______ change.
Classify the following as physical or chemical properties
Metallic sodium is soft enough to be cut with a knife.
