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प्रश्न
State whether the following is physical or chemical changes.
respiration in living beings —
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उत्तर
chemical change,
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Making a fruit salad with raw fruits
Fill in the blank
change in which the substance can be brought back to its original state is called a ............... change.
What are reversible and irreversible changes ? Give one example for each.
State whether the following is physical or chemical changes.
glowing of a bulb -
State whether the following is physical or chemical changes.
heating a mixture of iron filings and sulphur—
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.
Select the chemical changes from the following list of changes
Vaporisation of water into water vapour.
State which of the following 1 to 5 pertain to – A: Physical Change B: Chemical change :
- Sublimation.
- Fermentation.
- Liquefaction or condensation.
- Magnetization.
- Respiration.
State whether the following statement is true or false:
Stretching of rubber bands is not a physical change.
