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प्रश्न
State whether the following is physical or chemical changes.
respiration in living beings —
उत्तर
chemical change,
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संबंधित प्रश्न
Classify the changes involved in the following process as physical or chemical changes:
Photosynthesis
State whether the following is physical or chemical changes.
growing of a piglet into a pig —
Tick (√) the correct alternative from the choice given for the following statement.
A substance which can not sublime is
What is a chemical change ? Give two examples of chemical changes.
Match the following
| Sr. No. | A | B | C |
| 1. | Melting | Change of state from liquid to solid | Ticking of clock |
| 2. | Condensation | Change of state from liquid to gas | Formation of ice cube |
| 3. | Evaporation | Change of state from solid to liquid | Collecting flowers |
| 4. | Freezing | Change of state from gas to liquid | Ice cube to water |
| 5. | Periodic change | Occurs at irregular time intervals | Water to steam |
| 6. | Non-periodic change | Occurs at regular time intervals | Steam to water drops |
Physical Change: Boiling::Chemical Change: ______.
Assertion: The explosion of fire cracker is a physical change.
Reason: A physical change is a reversible change.
Tearing of sheet of paper into pieces is ______ By the process of Heating of water, change.
A physical change is generally____________.
Which of the following is not a physical change?
