Question

Identify impure substance(s).
(A) Fruit juices
(B) Sugar Solution
(C) Alcohol in water
(D) All of these

Answer 1

Impure means when there is some impurity present in a component. Therefore, impure substances involve more than one component in it. More than one component can be any other component other than the main component.

Complete step by step answer:
The matter is divided into various forms such as solid, liquid and gas. Apart from these, it is also classified as pure substances and mixtures.
A mixture, on the other hand, is impure if it consists of different kinds of elements combined together physically and not chemically. Impure substances are also called mixtures.
Considering the given options, we will find out which one of them is an impure substance.
Considering option (A), Fruit juices are a mixture of water, sugar and pulp of fruit. Therefore it is an impure substance, since it is a mixture of many substances.
Considering option (B), Sugar solution is a mixture of water and sugar. Therefore, it is an impure substance, as it contains more than one component.
Considering option (C), Alcohol in water is a mixture of alcohol and water.Therefore, it is an impure substance, as it contains more than one component.
Since, all the given options are impure substances therefore, the correct answer is the D option.

Note: Everything that exists in the earth is a form of a matter which is further defined as any substance that occupies space and has mass. Pure substances are substances that are made up of only one kind of particle and have a fixed or constant structure. Mixtures are further divided into a homogeneous or heterogeneous mixture.