Question

Milk is a compound.
A) True
B) False

Answer 1

Hint:We know that milk contains fats, proteins, lactose which is a sugar and water. The proteins that are present in milk are casein proteins. In milk, the fats, proteins and sugar are suspended in water.

Complete answer
We know that a substance that is composed of many identical molecules composed of atoms from more than one element held together by chemical bonds is known as a compound.

A compound is formed by two or more chemical elements that are chemically bonded together.
We know that pure substances are elements or compounds. But milk is not a pure substance.

We know that milk contains fats, proteins, lactose which is a sugar and water. Thus, milk is a mixture of fats, proteins, sugar and water which are mixed irrationally.Thus, milk is not a pure substance or a compound that is made up of one type of atom or molecule. But milk is a mixture of fats, proteins, sugar and water which are mixed irrationally.Thus, milk is a mixture. So, the given statement ‘milk is a compound’ is false.

Thus, the correct answer is option (B) false.

Note:Milk is an emulsion in which fat globules are suspended in water. Casein is a lyophilic (solvent loving) sol. The protein casein stabilizes the milk emulsion and thus, casein acts as an emulsifier for milk. Milk is an oil in water type of emulsion because fat globules in milk are suspended in water. Thus, in milk, flat globules are dispersed in water.