Chromatography problems
- 1. In gas chromatography, the basis for separation of the components of the volatile material is the difference in
Options- A. partition coefficients
- B. conductivity
- C. molecular weight
- D. molarity Discuss
Correct Answer: partition coefficients
- 2. Ion exchange chromatography is based on the
Options- A. electrostatic attraction
- B. electrical mobility of ionic species
- C. adsorption chromatography
- D. partition chromatography Discuss
Correct Answer: electrostatic attraction
- 3. In reverse phase chromatography, the stationary phase is made
Options- A. non-polar
- B. polar
- C. either non-polar or polar
- D. none of these Discuss
Correct Answer: non-polar
- 4. 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)
Options- A. V = V0 + kDVi
- B. V = V0/Vi
- C. V = V0 - kDVi
- D. V/V0 = kDVi Discuss
Correct Answer: V = V0 + kDVi
- 5. Thin layer chromatography is
Options- A. partition chromatography
- B. electrical mobility of ionic species
- C. adsorption chromatography
- D. none of the above Discuss
Correct Answer: adsorption chromatography
- 6. A combination of paper chromatography and electrophoresis involves
Options- A. partition chromatography
- B. electrical mobility of the ionic species
- C. both (a) and (b)
- D. none of these Discuss
Correct Answer: both (a) and (b)
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