Gas Chromatography Split injection is carried out by splitting the sample into smaller portions to inject sequentially splitting off some of the sample so that it does not enter the column None of these splitting the sample into smaller portions to inject at the same time through parallel ports splitting the sample into smaller portions to inject sequentially splitting off some of the sample so that it does not enter the column None of these splitting the sample into smaller portions to inject at the same time through parallel ports ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography A retention gap is placed between the injector and the front of the column to retain contaminants and prevent them from reaching the column prevent backflush of the injected solution retain the sample and release it gradually to the column All of these retain contaminants and prevent them from reaching the column prevent backflush of the injected solution retain the sample and release it gradually to the column All of these ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Helium is generally preferred as carrier gas over nitrogen and hydrogen because it is inert all of above it doubles up as a party gas for balloons and funny voices it has a lower viscosity it is inert all of above it doubles up as a party gas for balloons and funny voices it has a lower viscosity ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography What does the selectivity factor describe? The maximum number of different species which a column can separate simultaneously The relative separation achieved between two species None of these The proportional difference in widths of two chromatographic peaks The maximum number of different species which a column can separate simultaneously The relative separation achieved between two species None of these The proportional difference in widths of two chromatographic peaks ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following detectors give concentration-dependent signals? Infra-red detector Electron-capture detector Thermal conductivity All of these Infra-red detector Electron-capture detector Thermal conductivity All of these ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Sample retention in the column is measured by retention time retention index all of these retention factor retention time retention index all of these retention factor ANSWER DOWNLOAD EXAMIANS APP
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