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प्रश्न
State which of the following 1 to 5 pertain to – A: Physical Change B: Chemical change :
- Sublimation.
- Fermentation.
- Liquefaction or condensation.
- Magnetization.
- Respiration.
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उत्तर
- Sublimation – A: Physical Change
- Fermentation – B: Chemical change
- Liquefaction or condensation – A: Physical Change
- Magnetization – A: Physical Change
- Respiration – B: Chemical change
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Melting of butter in a pan
Write true or false for the statement.
Dissolving of solute in a solvent and rusting of iron are both physical changes.
True or false
Is melting of ice a reversible change?
Fill in the blank
Changes that occur in nature are called ______
Fill in the blank
Heat is ________ by a gas during the process of condensation.
Classify the Following as a Physical Or a Chemical Change.
Curdling of Milk
Fill in the blanks with the appropriate words of the statement given below:
Heating a piece of iron is considered a __________ change while heating a piece of coal [carbon] is considered a ___________ change.
Give a reason why – Heating a platinum wire is a reversible change but, heating a magnesium wire is an irreversible change.
Name the following.
The salt obtained when a chemical change takes place on the addition of iron to dilute sulphuric acid.
Name the following.
The product of the chemical change in keeping a polished iron nail exposed to the atmosphere.
