Question

In which case the process of centrifugation is not followed to separate its components.

A)Separating cream from fresh milk
B)Separating components of blood
C)Separating ammonium chloride from sand
D)Separating water from wet clothes in washing machine

Answer 1

: How can we obtain coloured compound (dye) from blue/black ink? 

Fill half a beaker with water.

Put a watch glass on the mouth of the beaker

Put few drops of ink on the watch glass.

Now start heating the beaker. We do not want to heat the ink directly. You will see that evaporation is taking place from the watch glass.

Continue heating as the evaporation goes on and stop heating when you do not see any further change on the watch glass.

Observe carefully and record your observations.