Answer:
(c) Options (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.
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