An eluotropic series None of these is a measure of the solvent adsorption energy ranks solvents by their relative abilities to displace solutes from a given absorbent ranks column packing material by their relative abilities to retain solutes on the column TRUE ANSWER : ? YOUR ANSWER : ?
HPLC stands for Highly Placed Liquid Chromatography both (a) and (b) High Performance Liquid Chromatography High Pressure Liquid Chromatography TRUE ANSWER : ? YOUR ANSWER : ?
In reversed phase HPLC, there is a polar solvent/non-polar column non polar solvent/polar column any of the above non polar solvent/non-polar column TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following(s) is/are the advantage of HPLC over traditional LPLC (low-pressure liquid chromatography)? All of these Sample recovery Greater sensitivity and reusable columns Ideal for ionic species and large molecules TRUE ANSWER : ? YOUR ANSWER : ?
A gradient elution in HPLC is one in which the composition of the solvent is changed continuously or in a series of steps remains constant None of these both (a) and (b) TRUE ANSWER : ? YOUR ANSWER : ?
Column efficiency is measured in terms of number of plates which is directly related to the square of the peak width inversely related to the cube root of the peak width directly related to the square of the peak width inversely related to the square of the peak width TRUE ANSWER : ? YOUR ANSWER : ?
The eluent strength is a measure of solvent adsorption energy solvent diffusivity solvent mixing index solvent absorption energy TRUE ANSWER : ? YOUR ANSWER : ?
Void volume refers to the the volume of the column between the point at which solvents are mixed and the beginning of the column the time required for the gradient to reach the column the volume of solvent contained in a liquid chromatographic column total volume of eluent in the column the remainder being taken up by the packing material TRUE ANSWER : ? YOUR ANSWER : ?
Which can be used as a mobile phase in HPLC applications? Any of the above Any compound with solubility in liquid Any compound with non-solubility in liquid Any compound with limited solubility in liquid TRUE ANSWER : ? YOUR ANSWER : ?
An isocratic elution in HPLC is one in which the composition of the solvent remains constant none of these changes continuously changes in a series of steps TRUE ANSWER : ? YOUR ANSWER : ?