HPLC Which of the following(s) is/are the advantage of HPLC over traditional LPLC (low-pressure liquid chromatography)? Ideal for ionic species and large molecules Greater sensitivity and reusable columns Sample recovery All of these Ideal for ionic species and large molecules Greater sensitivity and reusable columns Sample recovery All of these ANSWER DOWNLOAD EXAMIANS APP
HPLC Void volume refers to the 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 total volume of eluent in the column the remainder being taken up by the packing material 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 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 statements is true for a refractive index detector in HPLC? 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 It does not respond to many solutes It can only be used for isocratic elutions ANSWER DOWNLOAD EXAMIANS APP
HPLC In normal phase HPLC, there is a 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 non polar solvent/polar column non polar solvent/non-polar column any of the above ANSWER DOWNLOAD EXAMIANS APP
HPLC For a typical adsorbent such as silica gel, the most popular pore diameters are 150 and 200 A° 10 and 50 A° 100 and 150 A° 60 and 100 A° 150 and 200 A° 10 and 50 A° 100 and 150 A° 60 and 100 A° ANSWER DOWNLOAD EXAMIANS APP
HPLC The eluent strength is a measure of solvent absorption energy solvent diffusivity solvent mixing index solvent adsorption energy solvent absorption energy solvent diffusivity solvent mixing index solvent adsorption energy ANSWER DOWNLOAD EXAMIANS APP
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