HPLC Which of the following statements is true for a refractive index detector in HPLC? It is more sensitive than a UV detector It does not respond to many solutes It can only be used for isocratic elutions none of above It is more sensitive than a UV detector It does not respond to many solutes It can only be used for isocratic elutions none of above ANSWER DOWNLOAD EXAMIANS APP
HPLC For a typical adsorbent such as silica gel, the most popular pore diameters are 100 and 150 A° 10 and 50 A° 60 and 100 A° 150 and 200 A° 100 and 150 A° 10 and 50 A° 60 and 100 A° 150 and 200 A° ANSWER DOWNLOAD EXAMIANS APP
HPLC Dwell volume is defined as the volume of the column between the point at which solvents are mixed and the beginning of the column none of these the time required for the gradient to reach the column the volume of solvent contained in a liquid chromatographic column the volume of the column between the point at which solvents are mixed and the beginning of the column none of these the time required for the gradient to reach the column the volume of solvent contained in a liquid chromatographic column ANSWER DOWNLOAD EXAMIANS APP
HPLC In reversed phase HPLC, there is a non polar solvent/polar column non polar solvent/non-polar column any of the above polar solvent/non-polar column non polar solvent/polar column non polar solvent/non-polar column any of the above polar solvent/non-polar column ANSWER DOWNLOAD EXAMIANS APP
HPLC A gradient elution in HPLC is one in which the composition of the solvent None of these is changed continuously or in a series of steps both (a) and (b) remains constant None of these is changed continuously or in a series of steps both (a) and (b) remains constant 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 directly related to the square of the peak width inversely 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 directly related to the square of the peak width inversely related to the square of the peak width directly related to the square of the peak width ANSWER DOWNLOAD EXAMIANS APP
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