Gas Chromatography Which of the following is not used for detection in GC? NMR Infrared spectroscopy Flame ionisation Electrical conductivity NMR Infrared spectroscopy Flame ionisation Electrical conductivity ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What does the retention factor, k', describe? The distribution of an analyte between the stationary and the mobile phase All of these The migration rate of an analyte through a column The velocity of the mobile phase The distribution of an analyte between the stationary and the mobile phase All of these The migration rate of an analyte through a column The velocity of the mobile phase ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following are not used as stationary phases in a GC column? Polysiloxanes None are used as stationary phases Silica Cyclodextrins Polysiloxanes None are used as stationary phases Silica Cyclodextrins ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What is the typical internal diameter of fused silica capillary columns? 0.2-0.3 mm 0.5-1.0 mm 0.3-0.5mm 1.0-2.0 mm 0.2-0.3 mm 0.5-1.0 mm 0.3-0.5mm 1.0-2.0 mm ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of these effects result from slow injection of a large sample volume? Decreased resolution Non-linear detector response Increased resolution Constant resolution Decreased resolution Non-linear detector response Increased resolution Constant resolution ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What useful information can be found from a Van Deemter plot? Optimum column temperature Optimum column length Optimum mobile phase flow rate The selectivity factor Optimum column temperature Optimum column length Optimum mobile phase flow rate The selectivity factor ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS