6 Top CHROMATOGRAPHY Questions and Answers pdf

1. Thin layer chromatography is

A. partition chromatography
B. electrical mobility of ionic species
C. adsorption chromatography
D. none of the above

Answer: C

2. In gas chromatography, the basis for separation of the components of the volatile material is the difference in

A. partition coefficients
B. conductivity
C. molecular weight
D. molarity

Answer: A

3. In reverse phase chromatography, the stationary phase is made

A. non-polar
B. polar
C. either non-polar or polar
D. none of these

Answer: A

4. Ion exchange chromatography is based on the

A. electrostatic attraction
B. electrical mobility of ionic species
C. adsorption chromatography
D. partition chromatography

Answer: A

5. The general expression for the appearance of a solute in an effluent is (where V is the elution volume of a substance , V0 void volume, kD distribution constant and Vi internal water volume)

A. V = V0 + kDVi
B. V = V0/Vi
C. V = V0 – kDVi
D. V/V0 = kDVi

Answer: A

6. A combination of paper chromatography and electrophoresis involves

A. partition chromatography
B. electrical mobility of the ionic species
C. both (a) and (b)
D. none of these

Answer: C