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प्रश्न
Classify the following as chemical or physical change:
Rusting of almirah
पर्याय
Chemical change
Physical change
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उत्तर
Chemical change
Explanation:
Rusting of an almirah is a chemical alteration because it produces a new chemical molecule known as hydrated iron oxide (rust).
संबंधित प्रश्न
Explain why burning of wood and cutting it into small piece are considered as two different types of changes.
State the differences between a physical change and a chemical change.
True or false
Change of seasons is a non-periodic change.
Tick the most appropriate answer.
Photosynthesis requires
Which of the following are chemical changes ?
- decaying of wood
- burning of wood
- sawing of wood
- hammering of nail into wood
State which of the following terms connected with change of state of matter i.e.
(a) Melting
(b) Vaporisation
(c) Condensation
(d) Freezing
pertain to –
- Conversion of a liquid into a vapour or gas.
- Conversion of a liquid into a solid.
- Conversion of a solid into a liquid on heating.
Physical Change: Boiling::Chemical Change: ______.
______ is the Universal Solvent.
State whether the following statement is true or false:
Anaerobic bacteria digest animal waste and produce biogas.
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?
