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 are the benefits of decreasing the column internal diameter? Increased sample capacity Increased resolution Reduced risk of column overloading All of these Increased sample capacity Increased resolution Reduced risk of column overloading All of these ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What useful information can be found from a Van Deemter plot? Optimum column temperature The selectivity factor Optimum mobile phase flow rate Optimum column length Optimum column temperature The selectivity factor Optimum mobile phase flow rate Optimum column length ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following are not used as stationary phases in a GC column? Cyclodextrins Silica Polysiloxanes None are used as stationary phases Cyclodextrins Silica Polysiloxanes None are used as stationary phases ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Column bleeding occurs when the column is cracked and stationary phase leaks out the column breaks during installation and causes personal injury traces of the stationary phase are eluted elution of the analyte is extended over time the column is cracked and stationary phase leaks out the column breaks during installation and causes personal injury traces of the stationary phase are eluted elution of the analyte is extended over time ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography In column switching chromatography one column is removed and replaced by another the flow to the column is switched on and off repeatedly compounds trapped on one column are eluted to another column any of the above one column is removed and replaced by another the flow to the column is switched on and off repeatedly compounds trapped on one column are eluted to another column any of the above ANSWER DOWNLOAD EXAMIANS APP
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