HPLC For a typical adsorbent such as silica gel, the most popular pore diameters are 100 and 150 A° 150 and 200 A° 60 and 100 A° 10 and 50 A° 100 and 150 A° 150 and 200 A° 60 and 100 A° 10 and 50 A° ANSWER DOWNLOAD EXAMIANS APP
HPLC An isocratic elution in HPLC is one in which the composition of the solvent changes in a series of steps remains constant changes continuously none of these changes in a series of steps remains constant changes continuously none of these ANSWER DOWNLOAD EXAMIANS APP
HPLC Dwell volume is defined as the volume of solvent contained in a liquid chromatographic column the time required for the gradient to reach the column none of these 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 none of these the volume of the column between the point at which solvents are mixed and the beginning of the column ANSWER DOWNLOAD EXAMIANS APP
HPLC Which of the following(s) is/are the advantage of HPLC over traditional LPLC (low-pressure liquid chromatography)? Sample recovery Greater sensitivity and reusable columns All of these Ideal for ionic species and large molecules Sample recovery Greater sensitivity and reusable columns All of these Ideal for ionic species and large molecules ANSWER DOWNLOAD EXAMIANS APP
HPLC Column efficiency is measured in terms of number of plates which is inversely related to the cube root of the peak width inversely related to the square 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 cube root of the peak width inversely related to the square 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
HPLC Which of the following statements is true for a refractive index detector in HPLC? none of above It can only be used for isocratic elutions It is more sensitive than a UV detector It does not respond to many solutes none of above It can only be used for isocratic elutions It is more sensitive than a UV detector It does not respond to many solutes ANSWER DOWNLOAD EXAMIANS APP
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