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प्रश्न
Write true or false
Rusting of iron is a chemical change.
विकल्प
True
False
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उत्तर
True
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संबंधित प्रश्न
State whether the following is physical or chemical changes.
photosynthesis —
Give reasons why – separation of mixtures e.g. iron from a mixture of iron and sulphur is a physical change, but heating a mixture of iron and sulphur is considered a chemical change.
State which of the following pertain to – chemical changes.
- Substance retains its identity.
- The change is permanent.
- No new substance is formed.
- Is easily reversible.
- Produces one or more new substances by a change in its composition.
- The change is temporary.
- The composition and properties of the original substance are not altered.
Select the chemical changes from the following list of changes
Butter turning rancid
Distinguish physical and chemical changes.
When solute is dissolved in a solvent it forms a solution.
What kind of change is shown by tearing of paper?
Grinding of wheat grain changes its size. It is a ____________ change.
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?
Adding sugar to milk is a physical change.
