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प्रश्न
True or false
In a physical change no net energy change is involved.
पर्याय
True
False
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उत्तर
True
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Passing of electric current through water, and water breaking down into hydrogen and oxygen gases.
Write true or false
Deforestation is a man-made change.
Sublimation is classified as a physical change. Why ?
What is a chemical change ? Give two examples of chemical changes.
Classify the Following as a Physical Or a Chemical change.
Glowing of an Electric Bulb
Select the chemical changes from the following list of changes
Butter turning rancid
State which of the following 1 to 5 pertain to – A: Physical Change B: Chemical change :
- Sublimation.
- Fermentation.
- Liquefaction or condensation.
- Magnetization.
- Respiration.
Stretching gold coin into a ring is a ______ change.
Which of the following is a physical change?
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?
