Chromatography Quiz

Why is it important to draw the line on chromatography paper with a pencil?

• Pencil does not dissolve in the solvent.

• Pencil lines are easier to erase.

• Pencil is cheaper than ink.

• Pencil marks are more visible.

What should be ensured about the solvent level when placing the chromatography paper in the beaker?

• It should touch the ink samples.

• It should be above the pencil line.

• It should be below the pencil line.

• It should cover the entire paper.

Which of the following is NOT a possible solvent for chromatography?

• Acetone

• Water

• Oil

• Ethanol

Why do different colors separate during chromatography?

• They react with the paper.

• They are affected by light differently.

• They have different solubilities and adhesion properties.

• They have different weights.

What indicates a pure substance in chromatography?

• Multiple dots of the same color.

• A line of mixed colors.

• A single dot of one color.

• No visible dots.