Question

Which of the following is a mixture?
(A) Diamond
(B) Soap
(C) Sugar
(D) Seawater

Answer 1

Hint: You should know that mixture is a substance containing two or more substances in any proportion. Now, try to figure out the combination of each species given in the options.

Complete step by step answer:
We will discuss each option one by one to reach the answer -

Option A, Diamond is a pure substance because it is directly made up of carbon atoms. Diamond in a compound of pure Carbon (mainly). Due to the property of Carbon called Catenation, it can form long bonds with itself (nC-C-C-C-C).

Option B, Soap is the solution which is made up of soap is called a soap solution. It is considered a colloidal solution because it has a dispersion medium and dispersed phase. It is a sol type of colloidal solution in which the dispersion phase is solid, whereas the dispersed medium is liquid.

Option C, Sugar is a compound. It's a chemical combination of carbon, hydrogen, and oxygen.

Option D, Seawater is a mixture of many different substances. Some of these substances can be observed when the water in seawater evaporates and leaves behind salt.

Therefore, we can conclude that the correct answer to this question is option D.

Note: We should also know that the sea-water contains a mixture of salt and some other bigger size of impurities and a mixture of several gases in seawater. Due to other bigger sizes of impurities, seawater is classified as a heterogeneous mixture while due to a mixture of several gases and salt in seawater it is classified as a homogeneous mixture.