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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
Classify the following as chemical or physical change:
Burning of paper and wood
Fill in the blank.
Changes that occur in nature are called ........................
Make a list of different types of changes with example.
Tick (√) the correct alternative from the choice given for the following statement.
A substance which can not sublime is
Write true or false
Deforestation is a man-made change.
Give the main differences between physical changes and chemical changes.
Classify the Following as a Physical Or a Chemical Change.
Formation of Clouds
Select the chemical changes from the following list of changes
Respiration in mammals.
Two drops of dilute sulphuric acid were added to 1 g of copper sulphate powder and then small amount of hot water was added to dissolve it (step I). On cooling, beautiful blue coloured crystals got separated (step II). Step I and Step II are:
Grinding of wheat grain changes its size. It is a ____________ change.
