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प्रश्न
What are reversible and irreversible changes ? Give one example for each.
Change is the law of nature and occur in our everyday life, at all times and in all places.
Differentiate between the following change with a suitable example.
Reversible and irreversible change.
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उत्तर
- Reversible change : When a change in a substance can be reversed by changing the conditions, it is said to be a reversible change.
Example : Melting of ghee or wax. - Irreversible change : When a substance can not be brought back to its original state after a change, it is said to be an irreversible change.
Example : Souring of milk.
संबंधित प्रश्न
Fill in the blank
change in which the substance can be brought back to its original state is called a ............... change.
Write short answer.
Give two examples of periodic changes
Write short answer.
Sublimation is classified as a physical change. Why ?
Classify the following changes as physical or chemical.
Give a reason why
Change of seasons is a periodic change while the change of weather is a non-periodic change.
Filling up a balloon with hot air is a _______ change.
Sublimation of Iodine is a ______.
Ice, water and water vapour look different and display different ______ properties but they are ______ the same.
Give an example of a physical change in which the color of the substance changes.
Give an example to justify the statement that physical changes can be reversible as well as irreversible.
