Author: admin

29. Chromatography with solid stationary phase is called (A) Circle chromatography (B) Square chromatography (C) Solid chromatography Chromatography with solid stationary phase is called adsorption chromatography. The correct answer is […]

28. 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 A combination […]

27. Thin layer chromatography can be used to distinguish between different amino acids. If a particular amino acid has low solubility in the mobile phase used, then the other amino […]

26. High performance liquid chromatography (HPLC) cannot be used to: A. Identify the various pigments from a leaf extract B. Separate organic pesticides C. Determine the caffeine content in coffee […]

25. In gas chromatography, the concentration of a substance can be determined by: A. Comparison of the area under the peak produced by the substance with the areas under the […]

24. Which of the following statements about chromatography is correct? A. Paper chromatography and gas chromatography are both routinely used for qualitative analysis only. B. Paper chromatography is usually considered […]

23. In reverse phase chromatography, the nature of the stationary phase is: A. Non-polar B. Polar C. Either non-polar or polar D. None of these Reverse phase chromatography uses a […]

22. The purity of a solute collected between two times t1 and t2 during chromatographic separation is: A. Amount of solute eluted − amount of impurity eluted B. Amount of […]

21. Chromatography is based on the: A. Different rate of movement of the solute in a column B. Separation of one solute from other constituents by being captured on the […]

20. In a gel filtration column: A. Smaller proteins enter the beads more readily B. Larger proteins elute first C. Both A and B D. Large proteins enter the beads […]