Which of the following changes are irreversible in nature?
Which of the following changes are irreversible in nature?
The correct options are
A Setting of cement
D Burning of a candle
Irreversible change:- A change in which the original state of substance cannot be reattained is known as an irreversible change. These changes are permanent changes.
The setting of cement is an example of irreversible change as once the process is complete, its chemical properties are altered and it cannot be obtained in its original form. Hence, it is an irreversible change.
We can obtain the sugar dissolved in a solution by the process of evaporation.
Melted wax can be converted to its solid state upon cooling.
The burning of a candle wax produce carbon dioxide and moisture along with the evolution of heat and light and it cannot be converted back to its initial state and hence, it is an irreversible change.
A
Setting of cement
D
Burning of a candle
Irreversible change:- A change in which the original state of substance cannot be reattained is known as an irreversible change. These changes are permanent changes.
The setting of cement is an example of irreversible change as once the process is complete, its chemical properties are altered and it cannot be obtained in its original form. Hence, it is an irreversible change.
We can obtain the sugar dissolved in a solution by the process of evaporation.
Melted wax can be converted to its solid state upon cooling.
The burning of a candle wax produce carbon dioxide and moisture along with the evolution of heat and light and it cannot be converted back to its initial state and hence, it is an irreversible change.
