Question

Give reasons for the following.

Curdling of milk can be desirable or undesirable.

Answer 1

Curdling of milk:

• Curdling is the process by which milk gets converted into curd. This is a type of irreversible chemical change.
• Curdling can be desirable and undesirable on the basis of the presence and availability of the substance.
• For example, If you want to prepare tea, you need milk, in this case curdling is an undesirable change because now milk is unfit to use.
• On the other hand, if you want to curd the milk, or you want to prepare any dish involving curd, then curdling is a desirable change.

Thus, curdling of milk can be desirable or undesirable.