Chromatography (Part 3)

13. Gas chromatography can be performed in which of the following ways? A. Only in columns B. Only on plane surfaces C. Either in columns or on plane surfaces D. Neither in columns nor on plane surfaces

A. Only in columns

4. Ion exchange chromatography is based on the A. electrostatic attraction B. electrical mobility of ionic species C. adsorption chromatography D. partition chromatography

A. electrostatic attraction

15. Which of the following types of chromatography involves the process, where mobile phase moves through the stationary phase by the influence of gravity or capillary action? A. Column Chromatography B. High Pressure Liquid Chromatography C. Gas Chromatography D. Planar Chromatography

D. Planar Chromatography

17. In which type of chromatography, the stationary phase held in a narrow tube and the mobile phase is forced through it under pressure? A. Column chromatography B. Planar chromatography C. Liquid chromatography D. Gas chromatography

A. Column chromatography

18. In chromatography, the stationary phase can be ___________ supported on a solid. A. Solid or liquid B. Liquid or gas C. Solid only D. Liquid only

A. Solid or liquid

10. In Thin layer chromatography, the stationary phase is made of _________ and the mobile phase is made of _________ A. Solid, liquid B. Liquid, liquid C. Liquid, gas D. Solid, gas

A. Solid, liquid

8. In Column chromatography, the stationary phase is made of _________ and the mobile phase is made of _________ A. Solid, liquid B. Liquid, liquid C. Liquid, gas D. Solid, gas

A. Solid, liquid

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

A. V = V0 + kDVi

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

A. non-polar

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

A. partition coefficients

16. Chromatography is a physical method that is used to separate and analyse __________ A. Simple mixtures B. Complex mixtures C. Viscous mixtures D. Metals

B. Complex mixtures

7. Chromatography cannot be used to purify volatile substances. A. True B. False

B. False

9. Chromatography cannot be used to separate delicate products. A. True B. False

B. False

19. In chromatography, which of the following can the mobile phase be made of? A. Solid or liquid B. Liquid or gas C. Gas only D. Liquid only

B. Liquid or gas

12. Liquid chromatography can be performed in which of the following ways? A. Only in columns B. Only on plane surfaces C. Either in columns or on plane surfaces D. Neither in columns nor on plane surfaces

C. Either in columns or on plane surfaces

14. In Gas-liquid phase chromatography, the stationary phase is composed of _________ and the mobile phase is made of _________ A. Solid, liquid B. Liquid, liquid C. Liquid, gas D. Solid, gas

C. Liquid, gas

11. In which of the following type of paper, chromatography does the mobile phase move horizontally over a circular sheet of paper? A. Ascending paper chromatography B. Descending paper chromatography C. Radial paper chromatography D. Ascending - descending chromatography

C. Radial paper chromatography

21. Which of the following types of chromatography involves the separation of substances in a mixture over a 0.2mm thick layer of an adsorbent? A. Gas liquid B. Column C. Thin layer D. Paper

C. Thin layer

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

C. adsorption chromatography

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

C. both (a) and (b)

20. Which of the following cannot be used as adsorbent in Column adsorption chromatography? A. Magnesium oxide B. Silica gel C. Activated alumina D. Potassium permanganate

D. Potassium permanganate