HPLC 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 volume of solvent contained in a liquid chromatographic 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 the column between the point at which solvents are mixed and the beginning of the column the volume of solvent contained in a liquid chromatographic 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 ANSWER DOWNLOAD EXAMIANS APP
HPLC Which of the following(s) is/are the advantage of HPLC over traditional LPLC (low-pressure liquid chromatography)? Greater sensitivity and reusable columns Sample recovery Ideal for ionic species and large molecules All of these Greater sensitivity and reusable columns Sample recovery Ideal for ionic species and large molecules All of these ANSWER DOWNLOAD EXAMIANS APP
HPLC In reversed phase HPLC, there is a non polar solvent/polar column any of the above polar solvent/non-polar column non polar solvent/non-polar column non polar solvent/polar column any of the above polar solvent/non-polar column non polar solvent/non-polar column ANSWER DOWNLOAD EXAMIANS APP
HPLC Which of the following statements is true for a refractive index detector in HPLC? It does not respond to many solutes It can only be used for isocratic elutions It is more sensitive than a UV detector none of above It does not respond to many solutes It can only be used for isocratic elutions It is more sensitive than a UV detector none of above ANSWER DOWNLOAD EXAMIANS APP
HPLC HPLC methods include All of these liquid/solid (adsorption) chromatography liquid/liquid (partition) chromatography ion exchange and size exclusion chromatography All of these liquid/solid (adsorption) chromatography liquid/liquid (partition) chromatography ion exchange and size exclusion chromatography ANSWER DOWNLOAD EXAMIANS APP
HPLC Column efficiency is measured in terms of number of plates which is 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 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 directly related to the square of the peak width ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS