Question

Setting milk into curd is an example of:

• A. Physical change
• B. Chemical change
• C. Undesirable change
• D. Undesirable physical change

Answer 1

The correct option is B Chemical change

Setting of milk into curd is a chemical change as lactic acid (present in curd) is formed which is a new substance. Chemical changes are permanent changes in which new substances are formed. The composition and properties of these new substances are completely different from those of the original substances.