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प्रश्न
Select the chemical changes from the following list of changes
Respiration in mammals.
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उत्तर
Respiration in mammals is a CHEMICAL change, we breathe in oxygen and breathe out carbon dioxide. It is irreversible and composition changes.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Dissolving common salt in water.
State four differences between physical and chemical changes.
Tick (√) the correct alternative from the choice given for the following statement.
A substance which can not sublime is
Tick (√) the correct alternative from the choice given for the following statement.
An example of both physical and chemical change is
Which of the following are physical changes and which are chemical changes ?
Freezing of water
Classify the following as a physical or a chemical change.
Butter getting rancid
Change is the law of nature and occurs in our everyday life, at all times and in all places. Differentiate between the following change with a suitable example.
Desirable and undesirable change.
Select the chemical changes from the following list of changes
The crystallisation of salt from its solution.
State whether the following statement is true or false:
Stretching of rubber bands is not a physical change.
Cutting a log of wood into pieces is a chemical change.
