Gas Chromatography What does the selectivity factor describe? The proportional difference in widths of two chromatographic peaks None of these The relative separation achieved between two species The maximum number of different species which a column can separate simultaneously The proportional difference in widths of two chromatographic peaks None of these The relative separation achieved between two species The maximum number of different species which a column can separate simultaneously 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 Resolution is proportional to the square of the number of theoretical plates in a column cube root of the number of theoretical plates in a column number of theoretical plates in a column square root of the number of theoretical plates in a column square of the number of theoretical plates in a column cube root of the number of theoretical plates in a column number of theoretical plates in a column square root of the number of theoretical plates in a column ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Helium is generally preferred as carrier gas over nitrogen and hydrogen because it doubles up as a party gas for balloons and funny voices all of above it has a lower viscosity it is inert it doubles up as a party gas for balloons and funny voices all of above it has a lower viscosity it is inert ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Derivatisation of a sample is carried out to All of these increase the detector response reduce polarity of the analytes increase volatility of the analytes All of these increase the detector response reduce polarity of the analytes increase volatility of the analytes ANSWER DOWNLOAD EXAMIANS APP
Gas Chromatography Which of the following detectors give concentration-dependent signals? All of these Infra-red detector Thermal conductivity Electron-capture detector All of these Infra-red detector Thermal conductivity Electron-capture detector ANSWER DOWNLOAD EXAMIANS APP
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