Question

Benzene and water can be separated by:
(A) separating funnel
(B) sublimation
(C) fractional distillation
(D) filtration

Answer 1

Hint: A mixture can be separated by using different separation techniques. Separation techniques are those techniques that can be used to separate two different states of matter such as liquid and solid. Such separation techniques include filtration, distillation, evaporation, sedimentation etc.

Complete step by step solution:
We have been provided with a mixture containing benzene and water,
Both water and benzene are not miscible with each other, so they can be separated easily.
As water is heavier liquid and will form the lower layer and benzene is lighter liquid and will form the upper layer.
So, the different layers are formed and from where we can separate them.
So, for separating two immiscible liquids separating funnel is used:
A separating funnel is used to separate immiscible liquids. When two immiscible liquids are placed in a separatory funnel, two layers are seen. The denser solvent will be the bottom layer. Most halogenated solvents are denser than water, most non-halogenated solvents are less dense than water.
So, therefore a mixture containing water and benzene can be separated into its constituents with the help of separating funnels.

Therefore, we can say that option (A) is correct.

Note: A mixture is a material containing two or more elements or compounds that are in close contact and are mixed in any proportion. For example, air, sea-water, crude oil etc. these mixtures are preferred to be separated by using physical methods rather than chemical methods.