Gas Chromatography Sample retention in the column is measured by retention index retention time retention factor all of these retention index retention time retention factor all of these ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What is the typical internal diameter of fused silica capillary columns? 0.3-0.5mm 0.5-1.0 mm 1.0-2.0 mm 0.2-0.3 mm 0.3-0.5mm 0.5-1.0 mm 1.0-2.0 mm 0.2-0.3 mm ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Split injection is carried out by None of these splitting the sample into smaller portions to inject at the same time through parallel ports splitting off some of the sample so that it does not enter the column splitting the sample into smaller portions to inject sequentially None of these splitting the sample into smaller portions to inject at the same time through parallel ports splitting off some of the sample so that it does not enter the column splitting the sample into smaller portions to inject sequentially 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 In column switching chromatography one column is removed and replaced by another compounds trapped on one column are eluted to another column any of the above the flow to the column is switched on and off repeatedly one column is removed and replaced by another compounds trapped on one column are eluted to another column any of the above the flow to the column is switched on and off repeatedly ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following are not used as stationary phases in a GC column? Polysiloxanes Cyclodextrins Silica None are used as stationary phases Polysiloxanes Cyclodextrins Silica None are used as stationary phases ANSWER DOWNLOAD EXAMIANS APP
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