Which of the following are homogeneous in nature?
(i) Ice (ii) Wood (iii) Soil (iv) Air

Options

A. (i) and (iii)
B. (ii) and (iv)
C. (i) and (iv)
D. (iii) and (iv)

Answer

C

Explanation

Option (i) Ice and (iv) Air are homogeneous in nature as their particles are not distinctly visible. A homogeneous mixture has a uniform composition throughout its mass. It has no visible boundaries of separation between its various constituents, e.g., air, sugar solution, brass, etc.
A heterogeneous mixture does not have a uniform composition throughout its mass. It has visible boundaries of separation between its various constituents. e.g., soil, wood, blood etc.