Chemistry Chromatography

Diffusion is non-existent in ___________?

• Liquids

• Gas

• Solids

• None of the above

What is chromatography?

• The process by which particles move from a region of higher concentration to lower concentration

• The process by which water is purified

• The method through which solutes are separated

The chromatography paper is a ___________?

• Mobile phase

• Stationary phase

• None of the above

The retention factor value changes for each solute.

• True

• False

• Maybe

Solvent front indicates where the solvent ___________?

• Ended

• Started

• Mixed with the solutes

• All of the above

Which of the following is not a type of chromatography?

• Radial Chromatography

• Ascending Chromatography

• None of the above

A solute travelled 12 mm while the solvent front was 50 mm. What is the retention factor value for this solute?

• $\frac{12}{50}$

• 50

• 4.2

• 12

Which of the following substances can be separated using chromatography?

• Amino acids

• Ink

• Sugars from starch

• All the above

Descending chromatography is favoured by ________________?

• Wind

• Air

• Gravity

• Length of Paper

Which of the following is the most common type of chromatography?

• Thin layer chromatography

• Paper chromatography

• None of the above