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प्रश्न
Classify the changes involved in the following process as physical or chemical changes:
Photosynthesis
पर्याय
Physical change
Chemical change
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उत्तर
Chemical change
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संबंधित प्रश्न
Write short answer.
Name two reversible changes.
State three differences between evaporation and boiling
State whether the following is physical or chemical changes.
growing of a piglet into a pig —
Name two reversible changes.
State the various conditions that favour the process of evaporation.
Classify the following as physical or chemical change :
Formation of curd from milk
Give the main differences between physical changes and chemical changes.
Which of the following are physical changes ?
- melting of iron metal
- rusting of iron metal
- bending of an iron rod
- drawing a wire of iron metal
Define a chemical change. Give two examples of the above changes.
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.
