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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
Write true or false
Cutting of paper into pieces is a chemical change.
Write true or false
Decomposition of leaves is a fast change.
Classify the Following as a Physical Or a Chemical Change.
Curdling of Milk
What will you take into account while identifying the following?
A chemical change in a substance.
Select the chemical changes from the following list of changes
Drying of a fruit
Select the chemical changes from the following list of changes
Glowing of an electric bulb.
What type of change is colouring of a paper?
Sublimation of Iodine is a ______.
Classify the following as physical or chemical properties
The composition of a sample of steel is 98% iron, 1.5% carbon and 0.5% other elements.
Give an example of a physical change in which the color of the substance changes.
