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प्रश्न
Select the chemical changes from the following list of changes
Change of seasons
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उत्तर
Change of season is a PHYSICAL change, only change in temperature is seen and is a reversible change.
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संबंधित प्रश्न
Tick the most appropriate answer
2. Melting of ice is a
- reversible change
- irreversible change
- chemical change
- none of these
Tick the most appropriate answer.
3. Physical changes are
- permanent.
- periodic,
- temporary
- irreversible.
Write short answer.
Name two reversible changes.
Classify the following changes as physical or chemical:- melting of a solid (wax)
Write true or false
Dissolving of solute in a solvent and rusting of iron are both physical changes.
Classify the following as physical or chemical change :
Condensation of steam
What is a physical change ? Give two examples of physical changes.
Which of the following are physical changes and which are chemical changes ?
Glowing of an electric bulb
Select the chemical changes from the following list of changes
Preparation of carbon dioxide from calcium carbonate & dilute hydrochloric acid.
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Do you think rust is different from iron?
