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प्रश्न
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 |
उत्तर
| Column A | Column B |
| 1. a change which cannot be easily reversed | e. irreversible change |
| 2 a change that repeats itself at regular intervals | d. periodic change |
| 3. a change that is made by humans | a. man-made change |
| 4. a change in which the original substance cannot be obtained | b. chemical chang |
| 5. a change where no new substance is formed | c. physical change |
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Burning of paper and wood
Melting of solid (wax) is a physical change.
Write short answer.
Name two reversible changes.
Classify the following changes as physical or chemical: curdling of milk
How do you say that the process of digestion is a chemical change ?
State the Differences Between a Physical Change and a Chemical 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.
State whether the following statement is true or false. If false write the correct statement.
Melting of butter and wax are examples of chemical changes.
Select the chemical changes from the following list of changes
Boiling of milk.
State whether the following statements are true or false:
Stretching of rubber bands is not a physical change.
