HPLC stands for High Performance Liquid Chromatography both (a) and (b) High Pressure Liquid Chromatography Highly Placed Liquid Chromatography TRUE ANSWER : ? YOUR ANSWER : ?
Which can be used as a mobile phase in HPLC applications? Any compound with solubility in liquid Any compound with limited solubility in liquid Any compound with non-solubility in liquid Any of the above TRUE ANSWER : ? YOUR ANSWER : ?
In normal phase HPLC, there is a non polar solvent/polar column polar solvent/non-polar column non polar solvent/non-polar column any of the above 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 total volume of eluent in the column the remainder being taken up by the packing material the volume of solvent contained in a liquid chromatographic column TRUE ANSWER : ? YOUR ANSWER : ?
A gradient elution in HPLC is one in which the composition of the solvent both (a) and (b) None of these remains constant is changed continuously or in a series of steps 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 square of the peak width inversely related to the cube root of the peak width directly related to the square of the peak width TRUE ANSWER : ? YOUR ANSWER : ?
The eluent strength is a measure of solvent absorption energy solvent adsorption energy solvent mixing index solvent diffusivity TRUE ANSWER : ? YOUR ANSWER : ?
An eluotropic series ranks solvents by their relative abilities to displace solutes from a given absorbent is a measure of the solvent adsorption energy ranks column packing material by their relative abilities to retain solutes on the column None of these TRUE ANSWER : ? YOUR ANSWER : ?
HPLC methods include liquid/solid (adsorption) chromatography ion exchange and size exclusion chromatography liquid/liquid (partition) chromatography All of these TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following statements is true for a refractive index detector in HPLC? It can only be used for isocratic elutions It does not respond to many solutes It is more sensitive than a UV detector none of above TRUE ANSWER : ? YOUR ANSWER : ?