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प्रश्न
Give two examples for the following case:
Physical changes which are reversible
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उत्तर
- Folding of paper
- Melting of ice
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संबंधित प्रश्न
Classify the changes involved in the following process as physical or chemical changes:
Photosynthesis
Is burning a physical change or a chemical change? Why?
State whether the following is physical or chemical changes.
respiration in living beings —
State whether the following is physical or chemical changes.
lightning —
Write true or false
A natural change can also be a desirable change.
Select the chemical changes from the following list of changes
Breaking of glass
Classify the following changes as physical and chemical changes
A rough piece of wood is sanded and polished resulting in change in texture, Rusting of a iron nail, Painting the grill, Bending a paper clip, Pounding silver into thin plate, Rolling the chappathi dough into thin wire, Occurrence of day and night, eruption of volcano, burning of matchstick, dosa from the batter, blinking of eyelids, occurrence of a thunderstorm, rotation of the earth, formation of eclipses.
| Sr. No. | Physical changes | Chemical changes |
| 1. | ||
| 2. |
What is the difference between dissolution of sugar and burning of sugar ?
Gas exists in three states as solid, liquid, and gas.
______ is the Universal Solvent.
