Chromatography

Which of the following techniques separates various coloured components of black-coloured ink?

• Centrifugation

• Chromatography

• Evaporation

• Distillation

Which of the following mixture/s is/are separated by chromatography?

• Pigments from natural colours

• Colours in a dye

• Colours of flowers extracts

• All the above

Which of the following is correct about chromatography?

• It separates those solutes that dissolve in the same solvent.

• It separates those solutes that dissolve in different solvents.

• It separates a solute that dissolves in a solid solvent.

• It separates gaseous solutes from liquid solvents.

In case of chromatography the solvent rises up due to ……………………..

• Solute

• Filter paper

• Capillary action

• None of the above

Which of the following cannot be separated by chromatography?

• Components of blood

• Salt from water

• Components of ink

• Both a and b

Black dye separates into:

• Yellow, red and green colour

• Blue, red and yellow colour

• Yellow and green colour

• Red and yellow colour

Which of the following statements is correct?

• The most soluble component remains near the bottom.

• The most soluble component rises to the top.

• The least soluble component remains near the bottom.

• Both b and c

Which is the least soluble component in the case of green ink?

• Blue

• Yellow

• Red

• Pink