Question

Can we reverse the following change? If yes, suggest the name of the method.

Curd into milk

Answer 1

No, curd can not be changed into milk as it is a chemical change and in this change the following reactions take place.

$$\begin{gathered} \mathrm{milk}(\mathrm{lactose}\mathrm{sugar})\to \mathrm{Curd}(\mathrm{lactic}\mathrm{acid}) \\ \mathrm{Curd}(\mathrm{lactic}\mathrm{acid})\stackrel{\times }{\to }\mathrm{Milk}(\mathrm{lactose}\mathrm{sugar}) \end{gathered}$$

Reversible process: The process which can be reverted to its initial position after becoming a product is called the reversible process. Mainly physical processes are reversible processes. This process is also called a temporary change.

For example, Melting, boiling, etc.

Irreversible process: The processes that can not be reverted to their original form once become a product are called irreversible processes. This process is called permanent change.

For example, Burning paper, turning curd into milk, cutting trees, etc.