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प्रश्न
State whether the following is physical or chemical changes.
respiration in living beings —
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उत्तर
chemical change,
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संबंधित प्रश्न
Ripening of fruits is a desirable change.
Write short answer.
Give an example of desirable change which can also be undesirable
State whether the following is physical or chemical changes.
water cycle in nature —
Write true or false
Rusting of iron is a chemical change.
Match the columns.
| Column A | Column B |
| 1. a change which cannot be easily reversed | a. man-made change |
| 2 a change that repeats itself at regular intervals | b. chemical chang |
| 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 formed | e. irreversible change |
| f . slow change |
Classify the Following as a Physical Or a Chemical change.
Glowing of an Electric Bulb
Define a chemical change. Give two examples of the above changes.
Give four difference between physical and chemical changes.
Select the chemical changes from the following list of changes
The occurrence of lightning.
Explain the characteristics of physical change with examples.
