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प्रश्न
Classify the following as physical or chemical change :
Growth of a plant
विकल्प
Physical change
Chemical change
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उत्तर
Growth of plant – Chemical change
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संबंधित प्रश्न
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 |
How do you say that the process of digestion is a chemical change ?
Is burning a physical change or a chemical change? Why?
State whether the following is physical or chemical change.
Digestion of food —
Photosynthesis cannot take place at night.
Which of the following are physical changes and which are chemical changes?
Burning of candle wax, Melting of candle wax, Mixing of iron filings and sand, Burning of wood, Breaking a piece of chalk, Burning a piece of paper, Cutting a piece of paper.
Which of the following are physical changes and which are chemical changes ?
Glowing of an electric bulb
Given reason:
Burning of paper is a chemical change.
Fill in the blanks with the appropriate words of the statement given below:
Heating a piece of iron is considered a __________ change while heating a piece of coal [carbon] is considered a ___________ change.
Which of the following is not a physical change?
