Answer:
(a) A colloid is a heterogeneous mixture and its
components can be separated by the technique known as centrifugation.
(b) Ice, water and water vapour look different and display
different physical properties but they are chemically the same.
(c) A mixture of chloroform and water taken in a
separating funnel is mixed and left undisturbed for some time. The upper layer
in the separating funnel will be of water and the lower layer will be
that of chloroform (It is because water is lighter than chloroform).
(d) A mixture of two or more miscible liquids, for which
the difference in the boiling points is less than 25 K can be separated by the
process called fractional distillation.
(e) When light is passed through water containing a few
drops of milk, it shows a bluish tinge. This is due to the scattering of
light by milk and the phenomenon is called Tyndall effect. This
indicates that milk is a colloidal solution.
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